wane

to grow less in scope or intensity especially gradually in the course of the evening the storm steadily waned Synonyms abate, decline, de-escalate, die (away or down or out), diminish, drain (away), drop (off), dwindle, ease, ebb, fall, fall away, lessen, let up, lower, moderate, pall, phase down, ratchet (down) also rachet (down), recede, relent, remit, shrink, subside, taper, taper off, decreaseRelated Words compress, condense, constrict, contract; evaporate, fade (away), fritter (away), give out, melt (away), peter (out), tail (off), vanish; slacken, slow (down); alleviate, relax; flag, sink, weaken; cave (in), collapse, deflateNear Antonyms appear, emerge, show up; blow up, distend, elongate, lengthenAntonyms accumulate, balloon, build, burgeon (also bourgeon), enlarge, escalate, expand, grow, increase, intensify, mount, mushroom, pick up, rise, snowball, soar, swell, wax