occasion
noun.
an event that occurs at a critical time
at such junctures he always had an impulse to leave|it was needed only on special occasions
Synonym: juncture
noun.
a vaguely specified social event
the party was quite an affair|an occasion arranged to honor the president|a seemingly endless round of social functions
noun.
reason
there was no occasion for complaint
noun.
the time of a particular event
on the occasion of his 60th birthday
noun.
an opportunity to do something
there was never an occasion for her to demonstrate her skill
verb.
give occasion to