▸ noun
1 a settled or regular tendency or practice, especially one that is hard to give up:
he has an annoying habit of interrupting me
good eating habits
[mass noun] we stayed together out of habit.
▪ informal an addictive practice, especially one of taking drugs:
a cocaine habit.
▪ Psychology an automatic reaction to a specific situation.
▪ [mass noun] general shape or mode of growth, especially of a plant or a mineral:
a shrub of spreading habit.
2 a long, loose garment worn by a member of a religious order:
nuns in long brown habits, black veils, and sandals.
▪ [mass noun] archaic clothes:
the prince has lately visited the copper mines of that kingdom, in the habit of a miner.
– ORIGIN Middle English: from Old French abit, habit, from Latin habitus ‘condition, appearance’, from habere ‘have, consist of’. The term originally meant ‘dress, attire’, later coming to denote physical or mental constitution.