Synonyms:
- accelerate,
- aggrandize,
- aggravate,
- augment,
- blow up,
- boost,
- brace,
- brace up,
- buttress,
- case harden,
- complicate,
- concentrate,
- condense,
- confirm,
- consolidate,
- deepen,
- double,
- enhance,
- enlarge,
- exacerbate,
- exaggerate,
- expand,
- extend,
- fortify,
- gird,
- harden,
- heat up,
- heighten,
- hop up,
- hot up,
- intensify,
- invigorate,
- jazz up,
- key up,
- magnify,
- make complex,
- multiply,
- nerve,
- prop,
- ramify,
- redouble,
- refresh,
- reinforce,
- reinvigorate,
- restrengthen,
- sharpen,
- shore up,
- soup up,
- steel,
- step up,
- stiffen,
- strengthen,
- support,
- sustain,
- temper,
- toughen,
- triple,
- undergird,
- whet