half-dead
Word family
- deadadjectiveA1
- halfdeterminerA2
- halfpronounA2
- deadlyadjectiveB1
- dead tiredadjectiveB1
Synonym discussion
Sense: adjective/1
All four describe a state of extreme tiredness, but they differ in register and intensity. 'Exhausted' is the most neutral and widely used — appropriate in both casual conversation and formal writing such as a doctor's report. 'Half-dead' and 'dead tired' are distinctly informal and hyperbolic, suggesting the speaker is exaggerating for effect ('I'm half-dead' sounds more vivid than 'I'm exhausted'). 'Worn out' sits between them: it is informal but less dramatic, often implying long-term wear rather than a single draining event. For example, you could say 'The batteries are worn out' but not 'The batteries are half-dead' (in the figurative sense). In a sentence: 'After the exam, I was dead tired' sounds natural among friends, while 'The staff were exhausted by the end of the quarter' fits an email to management.
Common collocations
Phrases
- half-dead on one's feet
- leave someone half-dead
- feel half-dead
Etymology
'Half-dead' is a compound of Old English 'healf' (half) and 'dēad' (dead), first recorded in the 13th century with a literal meaning — someone so badly beaten or injured that they appeared more dead than alive. By the 16th century it had developed a figurative sense for extreme exhaustion. The modern informal use for 'very tired' became common in the 19th–20th centuries and is now the dominant meaning in everyday speech.