godan verb (-mu), intransitive verb
stagnate; become still; stop flowing
Used of water, air, or another flow that stops moving and becomes stagnant or heavy.
この池の水は夏になるとよどむ。
The water in this pond stagnates in summer.
godan verb (-mu), intransitive verb
settle at the bottom; be deposited; be sedimented
Used when mud, dregs, powder, or other matter settles and remains at the bottom of a liquid; 澱む is a natural kanji choice for this nuance.
川底に泥がよどんでいる。
Mud has settled on the riverbed.
godan verb (-mu), intransitive verb
become dull; become sluggish; lose freshness
Extended use for something that looks lifeless, clouded, stale, or lacking in energy, such as eyes, an atmosphere, or movement.
疲れで彼の目はよどんでいた。
His eyes were dull with fatigue.
godan verb (-mu), intransitive verb
Often used with speech or movement when the smooth flow breaks down: words falter, a reply is delayed, or someone stumbles in delivery.
緊張して、彼女の言葉がよどんだ。
She got nervous, and her words faltered.