Search Result for "on and off":
Wordnet 3.0

ADVERB (1)

1. not regularly;
- Example: "they phone each other off and on"
[syn: off and on, on and off]



WordNet (r) 3.0 (2006):

on and off
    adv 1: not regularly; "they phone each other off and on" [syn:
           off and on, on and off]