Up-. A prefix giving the idea of elevation or an intensive value. Words whose meaning is derived quite simply from that of the root plus that of the prefix are omitted here. Their synonyms and antonyms may be readily formed from those of the root word.
Upbraid. Reproach, censure, blame, condemn; taunt, chide, reprove.
Ant. Approve, commend, praise, eulogize, compliment, applaud.
Upon. On; about, concerning; with, immediately after, forthwith.
Ant. Under, beneath, below; before, after, without.
Upper. Higher, superior, on top.
Ant. Lower, inferior, below, beneath.
Upright. Erect, perpendicular, vertical; honest, just, honorable, conscientious, virtuous, good, faithful, true, trustworthy.
Ant. Inclined, slanted; inverted; unprincipled, dishonest, unscrupulous, corrupt, unconscientious.
Uproar. Tumult, disturbance, confusion, bustle, clamor, commotion, turmoil, racket, noise, din.