beef up (v.)
- accelerate
- aggrandize
- aggravate
- augment
- boost
- brace
- buttress
- complicate
- concentrate
- condense
- confirm
- consolidate
- deepen
- double
- enhance
- enlarge
- exacerbate
- exaggerate
- expand
- extend
- fortify
- gird
- harden
- heighten
- intensify
- invigorate
- magnify
- multiply
- nerve
- prop
- ramify
- redouble
- refresh
- reinforce
- reinvigorate
- restrengthen
- sharpen
- steel
- stiffen
- strengthen
- support
- sustain
- temper
- toughen
- triple
- undergird
- whet
