1.
allege-antonym: prove, deny
2.
allege-synonym: claim, contend
3.
arrant-synonym: egregious, unmitigated
4.
badinage-antonym: sermon
5.
badinage-synonym: banter, persiflage, repartee
6.
conciliate-antonym: antagonize, alienate, estrange
7.
conciliate-synonym: placate, mollify, propitiate
8.
countermand-antonym: reaffirm, reassert
9.
countermand-synonym: recall, revoke
10.
echelon-synonym: level, rank
11.
exacerbate-antonym: alleviate, mitigate, ameliorate
12.
exacerbate-synonym: aggravate, intensify, worsen
13.
fatuous-antonym: sensible, intelligent, perceptive, bright
14.
fatuous-synonym: silly, vapid, inane, doltish, vacuous
15.
irrefutable-antonym: disputable, indefensible, untenable
16.
irrefutable-synonym: indisputable, incontrovertible, undeniable
17.
juggernaut: a massive and inescapable force or object that crushes whatever is in its path
18.
lackadaisical-antonym: energetic, vigorous, wholehearted
19.
lackadaisical-synonym: listless, indolent, indifferent, lax
20.
litany-synonym: rigmarole, catalog, megillah
21.
macabre-synonym: grotesque, grim, ghoulish
22.
paucity-antonym: abundance, glut, plenitude, deluge
23.
paucity-synonym: lack
24.
portend-synonym: bod, foretell, foreshadow, suggest
25.
raze-antonym: build, construct, raise, erect
26.
raze-synonym: pull down, demolish, shave off
27.
recant-antonym: reaffirm, reassert
28.
recant-synonym: repudiate, disavow
29.
saturate-antonym: drain
30.
saturate-synonym: permeate, drench, flood, imbue
31.
saturnine-antonym: lighthearted, cheerful, vivacious
32.
saturnine-synonym: sullen, morose
33.
slough-antonym: take on, acquire, assume
34.
slough-synonym: shed, slog