Occur v. i. : To meet; to clash.

Occur v. i. : To go in order to meet; to make reply.

Occur v. i. : To meet one's eye; to be found or met with; to present itself; to offer; to appear; to happen; to take place; as, I will write if opportunity occurs.

Occur v. i. : To meet or come to the mind; to suggest itself; to be presented to the imagination or memory.

Example:
How come mayor earthquakes Occur during early morning?

Taxonomy
Merriam-Webster Online Dictionary, Dictionary, webster, cur, Word Games, Webster Online Dictionary with audio pronunciations, thesaurus, Google Search, Custom Search, glossary, english, language, ESL, Search, intransitive verb, Inflected, curred, Etymology.

Defination from the web:
occur from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... 3 : to come to mind <an idea that has occurred to me> Learn more about "occur" with Google Search: Custom Search ...