The term 'on EDGE (anxious)' can be solved by two crossword solutions: EDGE (4 letters) and PINSANDNEEDLES (14 letters). The phrase 'on EDGE' is an idiom that means to be in a state of high tension, anxiety, or nervousness. EDGE is a 4-letter word that means the line or boundary at which a surface terminates. PINSANDNEEDLES is a 14-letter phrase that is used to describe a sensation of numbness or tingling in the skin.