WordNet sense 1 (enough to meet a purpose):

adequate, enough

WordNet sense 2 (of a quantity that can fulfill a need or requirement but without being abundant):

sufficient

WordNet sense 3 (socially or conventionally correct; refined or virtuous):

nice

WordNet sense 4 (characterized by proper behavior or conventional conduct; worthy of respect):

respectable

WordNet sense 5 (according with custom or propriety):

becoming, comely, comme il faut, decorous, seemly

WordNet sense 6 (marked by suitability or rightness or appropriateness):

proper

WordNet sense 7 (not offensive to sexual mores in conduct or appearance):

modest

WordNet sense 8 (in the right manner):

decently, properly, right, in good order, the right way