Your sentence
On+y+va+!
Words in this sentence
y
there (at a place); there, thither (to there); Used as a pronoun to replace an adverbial phrase starting with à.; With verbs: see Appendix:French verbs followed by à for verbs which use this structure.; With adjectives. Only used with a handful of adjectives (the most common combination being y compris, which is a special case), mainly in legal terminology.
Pronoun
aller
to go; to attend (school, church regularly); to be going (to); will soon; forms a near-future tense; to be (feeling); to go well; to suit; to be X-proof (to be suitable for use in an appliance without running the risk of being damaged in the process)
Verb