off and on

US /ɔf ænd ɑn/
UK /ɔf ænd ɑn/
"off and on" picture
1.

de vez em quando, intermitentemente

sometimes but not regularly or continuously

:
It rained off and on all day.
Choveu de vez em quando o dia todo.
They've been dating off and on for years.
Eles namoram de vez em quando há anos.