Answer:

anorexic

Answer	Crossword Clue
ANOREXIC	Thinner than thin
ANOREXIC	Glutton's opposite
ANOREXIC	More than thin

ANOREXIC	Taking in too little
ANOREXIC	Dieter to the max

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.