The term 'all tuckered out' is an idiom that means to be exhausted or worn out. The crossword solutions for this term are BEAT (4 letters), SPENT (5 letters), TIRED (5 letters), and BONETIRED (9 letters). BEAT means to have been defeated or worn out, SPENT means to have used up all of one's energy, TIRED means to be weary or fatigued, and BONETIRED means to be extremely exhausted. All of these words describe the feeling of being completely worn out.