Unchecked rhymes with:
checked, rechecked, affect, becht, bedecked, brecht, checked, collect, confect, connect, correct, decked, deflect, deject, deregt, detect, direct, disaffect, disconnect, disinfect, disrespect, dissect, effect, eject, elect, erect, expect, fecht, hecht, incorrect, indirect, infect, inject, inspect, interconnect, interject, intersect, knecht, misdirect, necked, neglect, nondirect, overprotect, pecht, perfect, precht, protect, rechecked, recht, recollect, reconnect, redirect, reelect, reflect, reinspect, reject, respect, resurrect, schlecht, sect, select, specht, subject, suspect, teleconnect, trekked, wecht, wrecked
Unchecked sounds like:
umscheid, umstead, unangst, unannounced, unassisted, uncoat, uncoated, uncouth, unctad, uncut, unhinged, unionist, unionized, unissued, unjust, unmanaged, unmasked, unmixed, unquote, unsaid, unscathed, unseat, unseated, unset, unstated, unsteady, unsuited, unswayed, unused, unwashed