https://www.collinsdictionary.com/dictionary/english/yo-yo
- a toy consisting of a spool attached to a string, the end of which is held while it is repeatedly spun out and reeled in
- US and Canadian slang
a stupid person, esp one who is easily manipulated
verb
Word forms: yo-yos, yo-yoing or yo-yoed
(intransitive)- informal
to change repeatedly from one position to another; fluctuate
adjective- informal
changing repeatedly; fluctuating
Not sure how I would use it, except in a derogatory sense.
