The term 'Be a Whiner' can be described by three crossword solutions: YAMMER (6 letters), SNIVEL (6 letters), and PULE (4 letters). YAMMER is defined as to talk or complain persistently and tiresomely, while SNIVEL means to cry or whine in a feeble, self-pitying way. PULE, on the other hand, is defined as to whimper or whine in a feeble or petulant manner. All three words are used to describe someone who complains or whines in an annoying or irritating way.