Mess-about Definition

verb

(intransitive) To misbehave.

Kids! Stop messing about and do your work!
Wiktionary

(intransitive) To be in a casual non-committal relationship.

Anna and I are just messing about; this isn't going to last.
Wiktionary
To play with; to toy with; to waste the time of (a person).
Stop messing me about and give me a straight answer!
Wiktionary
Synonyms: