| Main Entry: | billow |
| Part of Speech: | verb |
| Definition: | surge |
Synonyms: |
balloon, belly, bloat, bounce, bulge, ebb and flow, heave, pitch, puff up, ripple, rise and fall, rise up, rock, roll, swell, toss, undulate, wave |
| Main Entry: | fluctuate |
| Part of Speech: | verb |
| Definition: | vacillate, change |
Synonyms: |
alter, alternate, be undecided, blow hot and cold, ebb and flow, flutter, go up and down, hem and haw, hesitate, oscillate, rise and fall, seesaw, shift, swing, undulate, vary, veer, vibrate, wave, waver, yo-yo |
Antonyms: |
hold, persist, remain, stay |