Did you know that the suffixes оват and еват have 2 main meanings? They denote a sign, which is not very intensive, or a shade of the main color. They also point to some similarity or a property of something comparable with another subject.
Зелёный – зеленоватая вода. Green – Greenish water.
Длинный – длинноватая верёвка. Long – A longish rope.
Крючок – крючковатый нос. Hook – A hooked nose.