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English to English verb
| 1 |
make strong or stronger |  | Example: This exercise will strengthen your upper body
strengthen the relations between the two countries
source: wordnet30
| 2 |
gain strength | | Example: His body strengthened
source: wordnet30
| 3 |
give a healthy elasticity to | | Example: Let's tone our muscles
source: wordnet30
| 4 |
To make strong or stronger; to add strength to; as, to strengthen a limb, a bridge, an army; to strengthen an obligation; to strengthen authority. | | source: webster1913
| 5 |
To grow strong or stronger. | | source: webster1913
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