Whenever is an adverb that is used to refer to an unspecified time in the past, present, or future. It can be used to refer to a single event or a repeated action. The crossword solutions for the term whenever are ONCE (4 letters), SOMETIME (8 letters), ANYTIME (7 letters), ASSOONAS (8 letters), ONDEMAND (8 letters), and ATANYTIME (9 letters). ONCE refers to a single occurrence, SOMETIME refers to an unspecified time in the past or future, ANYTIME refers to any point in time, ASSOONAS means as soon as, ONDEMAND means when requested, and ATANYTIME means at any point in time.