happen

verb

1. (intransitive)To occur or take place.

   “Let me tell you how it happened.”

   “Seeing the British establishment struggle with the financial sector is like watching an alcoholic who still resists the idea that something drastic needs to happen for him to turn his life around.”

2. (archaic, transitive)To happen to; to befall.

   “'By my soul! I believe something bad has happened me,' he muttered, and popped up his window, and looked out, half dreaming over the church-yard on the park beyond […]”

3. (impersonal, intransitive, with-infinitive)To do or occur by chance or unexpectedly.

   “Take an umbrella in case it happens to rain.”

   “Do you happen to have an umbrella?”

   “If you should (happen to) need any help, I'll be there.”

   “It happened that a police car was passing my house just at that moment.”

4. To encounter by chance.

   “Unexpectedly, in a nook close by the farmhouse, he happened upon a spot where the vintage had actually commenced.”

5. (informal)To become popular or trendy.

adv

1. (dialectal, not-comparable, obsolete)maybe, perhaps.

   “Yeah, well happen if he'd gone quietly, she wouldn't have needed to show him who's in charge.”