Why does 嫌い looks so much like an i adjective, when it is a na adjective?


I tried to look for this answer but could not find it so...

Why is that 嫌い looks so much like an i-adjective? I might be wrong, but most
i-adjectives seem follow this path:

> Kanji + い or Kanji + しい

But still 嫌い is an na-adjective, following sentences like 嫌いじゃない instead of
something like 嫌くない.

Is there a reason for that? Are there any other adjectives that function in a
similar way to this one?




きらい is the conjunctive form of きらう, whose conjugation goes きらわ(ず), きらい,
きらう(し), きらう(こと), きらえ(ば), きらえ, きらおう (i.e. godan verb), and used as a noun here
(practically, not substantial one but a stem of a na-adjective), which makes
it fit with the grammar for na-adjectives.




きらい is the conjunctive form of きらう, whose conjugation goes きらわ(ず), きらい,
きらう(し), きらう(こと), きらえ(ば), きらえ, きらおう (i.e. godan verb), and used as a noun here
(practically, not substantial one but a stem of a na-adjective), which makes
it fit with the grammar for na-adjectives.

