Antonym of PRIM

Answer: Option A

Prim : proper, formal.
Rash : acting or done without careful consideration of the possible consequences; impetuous.
Extravagant : lacking restraint in spending money or using resources.
Foul : offensive to the senses, especially through having a disgusting smell or taste or being dirty.
Shameful : worthy of or causing shame or disgrace.

Antonym of Prim is Rash