Abarim Publications' online Biblical Hebrew Dictionary
The two verbs מכך (makak) and מוך (muk) are obviously related and neither occurs very much in the Bible. They both mean to be low or humiliated:
The verb מכך (makak) occurs three times: Psalm 106:43 (sinking down in iniquity), Ecclesiastes 10:18 (sagging rafters due to indolence) and Job 24:24 (brought down to the netherworld of death).
The verb מוך (muk) is used to denote impoverished Israelites and occurs twice: Leviticus 25:47 and 27:8.