Incorrect spelling, explanation: this form is wrong because the rule says, that if there is a consonant before y at the end of the word, then y is transformed to i (if y is preceded by a vowel, then it remains a y). Therefore easyer is the wrong spelling and it should be easier. Easier is the only correct form of this comparative form from the adjective easy.

Correct spelling, explanation: easier is a comparative form of the word easy. According to the rule, in the case of a consonant plus y ending, y becomes i when any suffix or letter is added. When y is preceded by a vowel it remains. For example, the plural of fry is fries (y is preceded by a consonant), while the plural of boy is boys, because there is a vowel before y. Therefore easier is correct and easyer isn’t.

Definition of easier:
adjective, comparative of easy; less difficult or more comfortable to do
This maths test was much easier than the previous one.
Can we meet at 11 instead of 10? It would be much easier for me.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling