oscillates Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. 1 be undecided about something; 2 move or swing from side to side regularly Example Sentence He oscillates between accepting the new position and retirement. Synonyms waver; waffle; vacillate Antonyms decided Hear It! Say It! Write It! oscillates Switch to cursive Start Share with your friends: