The term 'CHECK (OFF)' can be solved by three different crossword solutions: UNDERLINE-link hover:text-barberry-yellow'>TICK (4 letters), UNDERLINE-link hover:text-barberry-yellow'>MARK (4 letters), and UNDERLINE (9 letters). Ticking is a method of marking something off a list, usually with a check UNDERLINE-link hover:text-barberry-yellow'>MARK. Marking is a similar action, but can also refer to making a note or comment on something. Underlining is a method of emphasizing a word or phrase by drawing a line underneath it. All three of these terms are related to the concept of checking something off a list.