Grammar › N1 · 12 Inference and judgment
〜ともなく: without really (intending)
N1 · 12 Inference and judgment
Says an action was done without clear intention or focus.
Verb dictionary form + ともなく + same verb: 見るともなく見る, 聞くともなく聞く. Also いつからともなく, どこからともなく (from somewhere). Written, a little literary. Used for vague or unconscious action.
Examples
テレビを見るともなく見ていたら、眠ってしまった。
I was watching TV without really paying attention, and fell asleep.
どこからともなく、いい香りが漂ってきた。
A nice smell drifted in from somewhere.