na-adjective
seeming bad; looking bad
Describes an appearance or impression of being bad, often used in the pattern 悪げに or 悪げな.
彼は悪げな様子で部屋に入ってきた。
He entered the room with a bad-looking expression.
その話を聞いて、彼女は悪げに笑った。
Hearing that story, she laughed in a way that seemed bad.
悪い is the standard adjective for 'bad', while 悪げ is a less common adjectival noun meaning 'seeming bad'.
悪気 (わるぎ) means 'ill will' or 'malice', a different word despite sharing the same kanji spelling as a rare form of 悪げ.
Derived from the adjective 悪い (わるい, 'bad') with the suffix げ (indicating appearance or seeming).