The term 'CAN't Do Without' is a phrase that implies something is essential or necessary. The crossword solutions for this term are NEEDS (5 letters), NEED (4 letters), and REQUIRES (8 letters). All three words imply that something is necessary, but the difference between them is in the degree of necessity. NEEDS implies that something is absolutely essential, while NEED implies that something is important, but not necessarily essential. REQUIRES implies that something is necessary, but not necessarily essential.