La'ah (H3811) describes a weariness that goes beyond physical fatigue into emotional exhaustion, grief, and even loathing. It appears in contexts where one is sick of something β weary to the point of disgust. Job uses it when describing his suffering. Numbers uses it for Israel's impatience in the wilderness.
Ezekiel 24:12 uses la'ah for the filth that refuses to come out β wearying effort that achieves nothing. Job 4:2 asks: 'If someone ventures a word with you, will you be impatient [la'ah]?' The theological dimension: God Himself is described as not growing la'ah with His people β His patience is supernatural (Isaiah 43:24 contrasts this). Yet there are limits: even God says their sins have wearied Him.