Choose the perfect synonym or antonym for the word

Happen

/ˈhæpən/

To come about or take place, often unexpectedly or without planning.

Synonyms:

"There have been some strange things happening," replied Sancho.

If a big robbery happens near Andover then -'

"Has anything happened to Yasuko, though?

Originates from the early 14th century hap, meaning chance or luck, combined with the suffix -en, indicative of verbs.

557 mentions per 1 million words

Very Often

Hint: Frequency according to COCA