To prop up; bolster
(Intransitive) To prepare for something bad, as an impact or blow.
To strengthen and secure (a position) with fortifications.
To buoy up or hearten:
(Elec.) To supply voltage or current to (a circuit, component, etc.)
To provide with pillars or added strength as if from pillars.
To place or lean (something) against a support
To verify; to make good; to substantiate; to establish; to sustain.
To make or become tough or tougher
To take away (a part from a whole)
The definition of tighten is to make something more fixed in place, more constricted, or more snug.
To cause to move backward or in a reverse direction:
Find another word for reinforce. In this page you can discover 21 synonyms, antonyms, idiomatic expressions, and related words for reinforce, like: buttress, brace, fortify, bolster, energize, pillar, prop, shore, strengthen, supplement and support.