The term 'is behind' can be solved by the following crossword solutions: OWES (4 letters), OOOO (4 letters), TRAILS (6 letters), RUNSLATE (8 letters). OWES is a verb meaning to have a debt or obligation to someone else. OOOO is an expression of surprise, disbelief, or disappointment. TRAILS is a noun meaning a path or track made by people or animals. RUNSLATE is a verb meaning to delay or postpone something.