To Rise and Fall in an Irregular Manner
This page is the CodyCross answer for the clue below from Nordic Wonders, Group 1956, Puzzle 1 (Ocean Cruises).
Question is: To Rise and Fall in an Irregular Manner
and the answer is: FLUCTUATE
Word Meaning:
FLUCTUATE — (intransitive) To vary irregularly; to swing.
Definitions from Wiktionary.