Impulsive synonyms

spontaneous (related)

Sudden, without warning.

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impetuous

Making arbitrary decisions, especially in an impulsive and forceful manner.

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hasty

Acting in haste; being too hurried or quick. (e.g. Without much thinking about it they made a hasty decision to buy it.)

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offhand

Performed or expressed without preparation or forethought:

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unpremeditated

Not planned or thought out in advance:

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spur-of-the-moment

Occurring or made hastily on impulse:

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foolhardy

Bold or daring in a foolish way; rash; reckless

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harum-scarum

Acting or done in a reckless or rash way; irresponsible

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headlong

(Figuratively) Reckless, impetuous.

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unconsidered

Not considered; not taken into account

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instinctive

Being such by natural inclination rather than conscious effort or study:

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changeable (related)

The definition of changeable is something that can be altered, or is something that may change appearance or format.

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rash (related)

Resulting from or acting with ill-considered haste or boldness.

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brash

The definition of brash is someone or something with an abrasive, tacky, self-serving or rude manner.

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hotheaded

Pertaining to or characteristic of a hothead or hotheadedness; (of a person) easily excited or angered.

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sudden

The definition of sudden is not expected, or happening without warning.

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unpredictable

Unable to be predicted.

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automatic (related)

Self-regulating:

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extemporaneous (related)

The definition of extemporaneous is something done or spoken with little or no preparation.

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careless (related)

Showing a lack of consideration:

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ill-considered

Poorly considered.

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improvident

Incautious; prone to rashness

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incautious

Careless, reckless, not exercising proper caution

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madcap

Behaving or acting impulsively or rashly; wild.

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precipitant

Acting with or marked by impulsiveness in thought or action; rash.

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precipitate

Moving with excessive speed or haste.

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slapdash

Hasty, careless, impetuous, etc.

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temerarious

Presumptuously or recklessly bold; rash or reckless:

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involuntary

Not subject to control of the volition:

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reflex

Produced as an automatic response or reaction:

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careful (related)

Thorough and painstaking in action or execution; conscientious:

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reckless

The definition of reckless is something that is done foolishly, carelessly, or without thinking about the consequences.

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planned (related)

Existing or designed according to a plan

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capricious

Subject to caprices; tending to change abruptly and without apparent reason; erratic; flighty

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extroverted (related)

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introvert (related)

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extrovert (related)

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attention-seeking (related)

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self-destructive (related)

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inattentive (related)

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impellent

Having the quality of being impelling.

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impromptu

The definition of impromptu is something done without advance thought or without a plan.

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passionate

Fired with intense feeling; ardent, blazing, burning.

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propulsive

Of or pertaining to propulsion

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quick

Moving with speed, rapidity or swiftness, or capable of doing so; rapid; fast.

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cautious (antonym)

Full of caution; careful to avoid danger; circumspect; wary

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wise (antonym)

Shrewd; crafty; cunning

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thoughtful (antonym)

Having or showing heed for the well-being or happiness of others and a propensity for anticipating their needs or wishes.

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considering (antonym)

tending to act without thought

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premeditative (antonym)

tending to act without thought

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heedful (antonym)

Paying close attention; mindful

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tearaway

Designed to be easily opened, separated, etc., as by tearing

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brainish

Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.

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whimsical

Playful or fanciful, especially in a humorous way:

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driving

Transmitting force or motion

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unprompted

Not prompted