The term 'very tired' can be described in a variety of ways, such as EXHAUSTED (9 letters), SPENT (5 letters), BLEARY (6 letters), allin (5 letters), and DEADBEAT (8 letters). EXHAUSTED implies a state of extreme physical or mental fatigue, while SPENT suggests that one has used up all of their energy. BLEARY implies a state of being drowsy and unfocused, while allin implies a state of being completely drained. Finally, DEADBEAT implies a state of being so tired that one is unable to do anything. All of these words describe a state of being very tired.