Je was op zoek naar: improper (Engels - Swahili)

that is improper, indecent, and a bad custom.
hakika huo ni uchafu na uchukizo na ni njia mbaya.

there is no suggestion that daud was doing anything improper.
hakuna dalili kuwa daud alikuwa anafanya chochote kisichostahili.

foul mouthed, and in addition to all this, of improper lineage.
mkavu, na juu ya hayo, mshari, amejipachika tu.

and the brothers sold him for an improper price, a limited number of coins; and they had no interest in him.
na wakamuuza kwa thamani duni, kwa akali ya pesa. wala hawakuwa na haja naye.

he said, “o nooh, he is not of your family; his deeds are most improper; therefore do not ask me a thing of which you do not have knowledge; i advise you not to be unwise.”
basi usiniombe jambo usio na ujuzi nalo. mimi nakuwaidhi usije ukawa miongoni mwa wajinga.