Related Clues:

• Yawning, say
• Careful to keep in the final beat
• Drowsy — dwarf
• Dead on one’s feet
• Tired mole gobbling fish up
• Romeo into poor diet exhausted
• Exhausted from exertion
• Dopey co-worker
• Ready for bed?
• Feeling ready for bed
• Small miner strips vertical end of quarry
• Note on wine that's no longer fresh
• Taking shelter inside agent's whacked
• “’Tis not ____ business, / But must be looked to speedily and strongly” (Cymbeline)
• Exhausted -- as is American car?