strengthen

Definition of Strengthen in English :

1. beef up, fortify, strengthen

make strong or stronger

Example Sentences:
'This exercise will strengthen your upper body'
'strengthen the relations between the two countries'

2. strengthen

gain strength

Example Sentences:
'His body strengthened'

3. strengthen, tone, tone up

give a healthy elasticity to

Example Sentences:
'Let's tone our muscles'

WordNet Lexical Database for English. Princeton University. 2010.

Strengthen

verb

to make or become stronger

verb transitive, verb intransitive

to increase in strength; make or become stronger

v. strength·ened, strength·en·ing, strength·ens

v.tr.

To make strong or increase the strength of.

v.intr.

To become strong or stronger.