Incorrect spelling, explanation: since the word benefit comes from Latin bene (good) and the verb facere (to do), it should be spelled with ne, not ni. There are no reasons to change the original spelling because benefit is completely pronounceable. Therefore benifit is an incorrect form.

Correct spelling, explanation: this form is the correct one because benefit comes from Latin benefactum, which is created from the words bene (good) and facere (to do). Latin word bene points to benefit as the correct form, and at the same time, benfit is incorrect.

Definition of benefit:
noun, something that is an advantage
I think medical care is the most important benefit of a job.
verb, to do good to or to deliver a benefit; to derive an advantage
You can really benefit from such an experience, can’t you?

Idioms and expressions with benefit:
for somebody’s benefit, to make somebody think something particular
Tom really hated the present but he pretended to like it for his girlfriend’s benefit.

Incorrect spelling

Incorrect spelling

Incorrect spelling