'occur' definitions:

Definition of 'occur'

From: WordNet
verb
Come to pass; "What is happening?"; "The meeting took place off without an incidence"; "Nothing occurred that seemed important" [syn: happen, hap, go on, pass off, occur, pass, fall out, come about, take place]
verb
Come to one's mind; suggest itself; "It occurred to me that we should hire another secretary"; "A great idea then came to her" [syn: occur, come]
verb
To be found to exist; "sexism occurs in many workplaces"; "precious stones occur in a large area in Brazil"

Synonyms of 'occur'

From: Moby Thesaurus