JAMB - English Language (2000 - No. 58)
Choose from the options opposite in meaning to the word underlined.
Common sense requires that one should be decorous at formal gatherings.
courteous
impolite
incurious
careful
Paliwanag
The word "decorous" means exhibiting proper behaviour, good manners and etiquette, especially in formal settings. Therefore, the opposite of being decorous would be behaving in a manner that is inappropriate or "impolite".