expression, na-adjective
seeming to have a problem; looking like there's a story
Describes a person, situation, or thing that appears to have some hidden trouble, complication, or backstory. Often used when someone looks troubled or something seems off.
彼は訳ありげな顔でため息をついた。
He sighed with a look that suggested something was troubling him.
その古い家はなんだか訳ありげに見える。
That old house looks like it has some kind of story behind it.
訳あり is a noun meaning 'having a reason/circumstance' or 'having a problem'; 訳ありげ adds the suffix げ to mean 'seeming to have a problem'.
ありげ is a suffix meaning 'seeming to have/exist'; 訳ありげ combines it with 訳 (reason/circumstance).
Compound of 訳 (わけ, 'reason, circumstance') + あり (the continuative form of ある, 'to exist') + げ (a suffix indicating appearance or seeming). Literally 'seeming to have circumstances'.