Godan verb with 'su' endingtransitive verb enturbiar;ensuciar;contaminar

Godan verb with 'su' endingtransitive verb to make muddy (of a liquid);to make cloudy;to make turbid;to roil

Godan verb with 'su' endingtransitive verb to make ambiguous;to evade (e.g. the point);to be noncommittal about

expressions (phrases proverb it is simply common courtesy to clean up after yourself;a bird does not foul the nest it is about to leave;on leaving a place, one should see that all is in good order