1. (v. t.) To unfasten, as what is locked; as, to unlock a door or a chest.

2. (v. t.) To open, in general; to lay open; to undo.

account for allegorize answer bare bottom cast off clarify clear clear up crack debug decipher decode demonstrate demythologize deobstruct detach disclose disengage disentangle divine do doff dope dope out elucidate enlighten euhemerize exemplify explain explain away explicate expose exposit expound fathom figure out find out find the answer find the solution free get get right give reason for give the meaning guess guess right have it hit it illuminate illustrate interpret liberate loose loosen make clear make out make plain manifest open the lock patefy plumb popularize psych psych out puzzle out rationalize ravel ravel out release remove resolve reveal riddle shed light upon show show how show the way simplify solve sort out spell out take off throw light upon unbar unbind unblock unbolt unbridle unbuckle unbutton uncage uncase unchain unclasp unclench unclog unclutch uncork uncover uncurtain undo undrape unfasten unfetter unfold unfoul ungag unglue unhandcuff unhobble unlace unlash unlatch unleash unloose unloosen unmanacle unmuzzle unpen unpinion unplug unravel unriddle unroll unscramble unseal unshackle unsheathe unshut unstick unstop unstrap untangle untether untie untruss untwist unveil unweave unwrap unyoke weigh anchor work work out