On occasion
prep_phrase
prep_phrase ·Rare ·Advanced level
Definitions
Adverb
- 1 sporadically and infrequently wordnet
Prep_phrase
- 1 Occasionally, from time to time, now and then.
"Only on rare occasion."
Example
More examples"It is not in itself surprising that a genuine advance of knowledge should in this manner become on occasion a source of new error."