toughen Definition

tighten, stiffen, strengthen, sharpen, harden, intensify, reinforce, enhance, temper, exacerbate, emphasize, enure, anneal, inure, loosen, soften, tweak, weaken, liberalize, redouble, fortify, relent, beefing, smarten, crack, lighten, reintroduce, enforce, improve, amend, clamp, bolster, tighten up, punish, rethink, impose, curb, restrict, standardize, lengthen, outlaw, freshen, revamp, ramped, penalize, overhaul, alter, push, enact, legislate, curtail, relax, redraft, abolish, reconsider, regulate, introduce, discourage, shake, adopt, reimpose, harmonize, reassess, enshrine, bulked, adjust, reshape, modernize, reexamine, revise, modify, refine, rewrite, codify, rile, renew, deter, watered, criminalize, flout, buckle, ratcheted, protect, liven, boost, enharden, clarify, shorten, simplify, remollient, wake, broaden, stymie, keep, reauthorize, prohibit, adhere, expand, legalize, reassert,