Incorrect spelling

happenned

Incorrect spelling, explanation: in order for happenned to be correct, the base word of the past tense would need to be happenn, as there is no other way for the double n to occur otherwise. Happenn is, of course, not correct, so after adding the past-tense suffix -ed, it is easy to see that happened is the only possible correct option.


Correct spelling

happened

Correct spelling, explanation: in English regular past forms from verbs are made by adding the suffix -ed to the base word, in this case, happen. In some cases, there are changes to adjust the spelling, but in this case, no other process is needed. Happened is the simplest and the only correct past form of happen.

Definition of happened:
Verb, past tense of happen
1. To occur (about an event)
I waited until midnight, but nothing happened.
2. To take place by accident
I just happened to have my camera with me when I saw this beautiful bird.


Incorrect spelling

happended

Incorrect spelling

Incorrect spelling

happend

Incorrect spelling

Incorrect spelling

hapened

Incorrect spelling

Incorrect spelling

heppened

Incorrect spelling