unblock

• POS: Verb (transitive)
• HYPHEN: un=block

OXFORD DICTIONARY

unblock, v.tr.
1 remove an obstruction from (esp. a pipe, drain, etc.).
2 (also absol.) Cards allow the later unobstructed play of (a suit) by playing a high card.

THESAURUS

unblock

aid, bare, clear, clear the way, deobstruct, disclose, ease, expedite, explain, expose, facilitate, free, grease, grease the ways, grease the wheels, hasten, help along, loose, lubricate, make clear, make way for, manifest, oil, ope, open the way, open up, patefy, pave the way, prepare the way, quicken, remove friction, reveal, run interference for, simplify, smooth, smooth the way, soap the ways, speed, unbar, uncase, unclench, unclog, unclutch, uncork, uncover, uncurtain, undo, undrape, unfold, unfoul, unjam, unlatch, unlock, unplug, unroll, unseal, unsheathe, unshut, unstop, unveil, unwrap