The term 'not healthy' can be described by the crossword solutions of 'UNSOUND, ' 'ILL, ' 'PEAKY, ' 'INFIRM, ' 'INVALID, ' 'RICKETY, ' and 'POISONOUS.' UNSOUND means not in good condition, ILL means having an illness or disease, PEAKY means looking pale and unhealthy, INFIRM means weak and frail, INVALID means not legally binding, RICKETY means unsteady and likely to collapse, and POISONOUS means containing a toxin that is harmful to living things. All of these words describe something that is not healthy.