To make or become tight or tighter

• reinforce

  1. To give more force or effectiveness to; strengthen:
  2. To strengthen by adding extra support or material.
  3. To strengthen (a military force) with additional personnel or equipment.

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  1. To give more force or effectiveness to; strengthen:
  2. To strengthen by adding extra support or material.
  3. To strengthen (a military force) with additional personnel or equipment.

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• strengthen

  1. To make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce.
  2. To animate; to give moral strength to; to encourage; to fix in resolution; to hearten.
  3. To augment; to improve; to intensify.

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  1. To make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce.
  2. To animate; to give moral strength to; to encourage; to fix in resolution; to hearten.
  3. To augment; to improve; to intensify.

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To make or become tense

• stiffen

  1. To make or become stiff or stiffer
  2. (Intransitive) To become stiff.

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  1. To make or become stiff or stiffer
  2. (Intransitive) To become stiff.

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• tauten

  1. To make or become taut
  2. (Ergative) To become taut.

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  1. To make or become taut
  2. (Ergative) To become taut.

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• tense

  1. To make or become tense

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  1. To make or become tense

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To make tight

• compress

  1. To encode (digital data) so that it can be stored or transmitted in significantly fewer bits
  2. To press together:
  3. (Computers) To encode (data) to minimize the space required for storage or transmittal:

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  1. To encode (digital data) so that it can be stored or transmitted in significantly fewer bits
  2. To press together:
  3. (Computers) To encode (data) to minimize the space required for storage or transmittal:

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• condense

  1. To become more dense or compact.
  2. (Chem.) To cause molecules of (the same or different substances) to combine to form a more complex compound, often with elimination of a simple molecule, as water
  3. To change (a substance) to a denser form, as from a gas to a liquid

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  1. To become more dense or compact.
  2. (Chem.) To cause molecules of (the same or different substances) to combine to form a more complex compound, often with elimination of a simple molecule, as water
  3. To change (a substance) to a denser form, as from a gas to a liquid

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• squeeze

  1. To manage to find time or space for:
  2. (Games) To force (an opponent) to use a potentially winning card in a trick he or she cannot take in bridge.
  3. To put pressure or bring influence to bear upon (someone) to do a certain thing, as to pay money, etc.

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  1. To manage to find time or space for:
  2. (Games) To force (an opponent) to use a potentially winning card in a trick he or she cannot take in bridge.
  3. To put pressure or bring influence to bear upon (someone) to do a certain thing, as to pay money, etc.

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• bind

  1. (Chemistry) To combine with, form a chemical bond with, or be taken up by, as an enzyme with its substrate.
  2. To cause to cohere or stick together in a mass:
  3. To compel, as by oath, legal restraint, or contract

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  1. (Chemistry) To combine with, form a chemical bond with, or be taken up by, as an enzyme with its substrate.
  2. To cause to cohere or stick together in a mass:
  3. To compel, as by oath, legal restraint, or contract

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• contract

  1. To hire (a person, business, etc.) to perform under contract
  2. To acquire or incur:
  3. To enter into by contract; establish or settle by formal agreement:

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  1. To hire (a person, business, etc.) to perform under contract
  2. To acquire or incur:
  3. To enter into by contract; establish or settle by formal agreement:

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• strangle

  1. To kill by squeezing the throat as with the hands, a noose, etc., so as to shut off the breath; throttle; choke
  2. To compress the trachea so as to prevent sufficient passage of air; suffocate.
  3. To become strangled.

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  1. To kill by squeezing the throat as with the hands, a noose, etc., so as to shut off the breath; throttle; choke
  2. To compress the trachea so as to prevent sufficient passage of air; suffocate.
  3. To become strangled.

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• constrict

  1. To become constricted.
  2. To make smaller or narrower, esp. at one place, by binding, squeezing, or shrinking; contract
  3. To hold in; limit; restrict

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  1. To become constricted.
  2. To make smaller or narrower, esp. at one place, by binding, squeezing, or shrinking; contract
  3. To hold in; limit; restrict

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• crush

  1. To press between two opposing forces so as to break or injure; put out of shape or condition by pressure; squeeze together; crumple
  2. To be or become crushed:
  3. To put down with force; subdue:

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  1. To press between two opposing forces so as to break or injure; put out of shape or condition by pressure; squeeze together; crumple
  2. To be or become crushed:
  3. To put down with force; subdue:

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• cramp

  1. To turn (the front wheels of an automobile, etc.) sharply
  2. To hold together with a cramp.
  3. To affect with or experience a cramp or cramps.

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  1. To turn (the front wheels of an automobile, etc.) sharply
  2. To hold together with a cramp.
  3. To affect with or experience a cramp or cramps.

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• pinch

  1. To cause pain or discomfort to (a part of the body) by pressing or being too tight:
  2. To cause to be in difficulty or financial distress:
  3. To draw a thumb and a finger together on a touchschreen to cause the image to become smaller.

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  1. To cause pain or discomfort to (a part of the body) by pressing or being too tight:
  2. To cause to be in difficulty or financial distress:
  3. To draw a thumb and a finger together on a touchschreen to cause the image to become smaller.

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• grip more tightly

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• clench

  1. To clinch (a bolt, for example).
  2. To bring together tightly; close (the teeth or fist) firmly
  3. To squeeze; to grip or hold tightly.

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  1. To clinch (a bolt, for example).
  2. To bring together tightly; close (the teeth or fist) firmly
  3. To squeeze; to grip or hold tightly.

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• screw-down

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• add pressure

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To become tight

• contract

  1. To hire (a person, business, etc.) to perform under contract
  2. To acquire or incur:
  3. To enter into by contract; establish or settle by formal agreement:

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  1. To hire (a person, business, etc.) to perform under contract
  2. To acquire or incur:
  3. To enter into by contract; establish or settle by formal agreement:

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• harden

  1. To become hard or harder.
  2. To rise and become stable. Used of prices.
  3. To become fixed, settled, or less subject to change:

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  1. To become hard or harder.
  2. To rise and become stable. Used of prices.
  3. To become fixed, settled, or less subject to change:

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• congeal

  1. To solidify or coagulate:
  2. To cause to solidify or coagulate:
  3. To cause to come together to form a whole or produce a result:

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  1. To solidify or coagulate:
  2. To cause to solidify or coagulate:
  3. To cause to come together to form a whole or produce a result:

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• stiffen

  1. To make or become stiff or stiffer
  2. (Intransitive) To become stiff.

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  1. To make or become stiff or stiffer
  2. (Intransitive) To become stiff.

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• toughen

  1. To make or become tough or tougher
  2. (Intransitive) To become tough.

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  1. To make or become tough or tougher
  2. (Intransitive) To become tough.

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• become more disciplined

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• become stricter

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