ill-humoured
Word family
- ill-humournounC1
- ill-humouredlyadverbC1
- good-humouredadjectiveC1
- humournounB1
Synonym discussion
Sense: adjective/1
All five describe an unhappy or unfriendly mood, but they differ in register and the kind of behaviour they suggest. 'Grumpy' is the everyday, informal choice — children, tired adults, and pets can all be grumpy without it sounding harsh. 'Bad-tempered' is neutral and the closest plain-English equivalent of 'ill-humoured'; both work well in writing. 'Ill-humoured' itself leans British and slightly literary, and is often attributive ('an ill-humoured reply'). 'Surly' is stronger: it implies the person is openly rude or unwelcoming, not just quietly miserable — a surly waiter ignores you, while an ill-humoured waiter merely frowns. 'Irritable' shifts the focus from the present mood to a tendency to become angry quickly, often for health or stress reasons. So you might write: 'After a sleepless night, the normally cheerful nurse was irritable and ill-humoured with every patient.'
Etymology
A compound of 'ill' (meaning 'bad' or 'poorly') and 'humour' in its older medical sense. From medieval times until the 1700s, doctors believed the body contained four fluids called humours, and a person's mood depended on the balance between them. To be 'in a good humour' meant the fluids were balanced and the person felt cheerful; to be 'in an ill humour' meant they were out of balance and the person felt cross. The adjective 'ill-humoured' is recorded in English from the early 1600s and has kept the mood-related meaning even after the medical theory was abandoned.