Phrasal verbs starting with "flex"
4 phrasal verbs use this verb
flex off
C1
To boast or show off, often in a competitive or dismissive way (slang).
flex on
C1
To show off or boast at someone's expense, especially to demonstrate superiority over them.
flex out
C1
To display or show off one's muscles or physical strength; or more rarely, to leave a situation.
flex up
B2
To tighten and display one's muscles; or figuratively, to increase strength or capability.