boiling
Word family
- boilverbA2
- boilernounB2
Synonym discussion
Sense: adjective/1
'Hot' is the broad everyday word and fits almost any situation. 'Boiling' is stronger and more vivid; speakers use it when the heat feels hard to bear or almost dangerous. 'Scorching' is more dramatic still and often suggests sun or surfaces that could burn you. 'Sweltering' is different again: it usually describes weather or a room where the air feels heavy, sticky, and hard to breathe in. Compare: 'The pan handle was hot' gives basic information, but 'The pan handle was boiling' warns you not to touch it. 'It was sweltering on the bus' focuses on trapped air, while 'The sand was scorching' focuses on a burning surface.
Etymology
Boiling comes from the verb 'boil' plus the ending '-ing'. 'Boil' entered English through Old French from Latin 'bullire', which meant 'to bubble' or 'boil'. The oldest idea is liquid making bubbles because of heat; from that, English later developed the wider sense 'extremely hot' and the intensifying use in phrases like 'boiling hot' and 'boiling mad'.