Correct spelling, explanation: the form excellent is correct as it comes from Latin excellentia that derives from present participle excellere, consisting of prefix ex, meaning out of, and cellere, standing for rise high. In English, the word excellent occurs in the 14th century. Considering the origin of this word and what elements it consists of, we certainly say that only excellent is an error-free form.

Definition of excellent:
adjective, very good, of high quality, outstanding,
When I lived in Varna, the view from the window was excellent.
They have recently watched an excellent film.

Phrases with excellent:
have it on excellent authority – when you have it on excellent authority, you believe in something due to reliable information,
They have it on excellent authority that the company will soon be making good furniture.
in excellent condition – in very good condition; strong and healthy,
I go running every evening to be in excellent condition.
My bike is in excellent condition.

Incorrect spelling, explanation: because of the origin of the word, exellent is incorrect. It derives from Latin present participle excellere, containing two elements ex and cellere, not ellere. Then it occurs in Old French as excellence, where there is also the consonant c. Finally, the first known use of excellent was in Middle English and it has survived to this day. Therefore, exellent is spelled wrong.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling