whiner

Noun

 * 1)  One who whines about perceived problems; a complainer.
 * I never realized that he was such a whiner, but he complained steadily about various minor discomforts for the entire road trip.

Synonyms

 * See also Thesaurus:complainer
 * See also Thesaurus:complainer
 * See also Thesaurus:complainer
 * See also Thesaurus:complainer