strengthen Synonyms

fortify bolster boost brace invigorate enhance shore up prop up consolidate increase encourage stiffen confirm support beef up improve reinforce augment harden thicken tripling sustain truss supplement supercharge substantiate undergird swell tempered tighten tone toned tempering toning toughened toughening toughen temper strengthening shored shore sharpen secure rise revivify revive revitalize resurrect restrengthen restore