Fasting is going without food for a religious reason. A day of fasting, break the fast, fasting and prayer.
Nearly every major religion has it, and the rules differ enormously: Ramadan forbids food and drink from dawn to sunset for a month, and Lent is a partial fast over forty days. Medical fasting before an operation is a different thing with the same name.
1nounfastingGoing without food for a religious reason.
“Yom Kippur is a day of fasting and prayer for Jewish people.”
fasting is a practice.
Proto-Indo-European
*peh₂ǵ-
Old English
fæst
Middle English
fast
English
fast
English, today
fasting
by surface analysis, fast + -ing. fast comes from Middle English fast, from Old English fæst. From Middle English fast, fest, from Old English fæst (“firm, secure”), from Proto-West Germanic fast, from Proto-Germanic fastuz; see it for cognates and further etymology. The development of “rapid” from an original sense of “secure” apparently happened first in the adverb and then transferred to the adjective; compare hard in expressions like “to run hard”. The original sense of “secure, firm” is now slightly archaic, but retained in the related fasten (“make secure”). Also compare close meaning change from Latin rapiō (“to snatch”) to Latin rapidus (“rapid, quick”), from Irish sciob (“to snatch”) to Irish sciobtha (“quick”).
Etymology from Wiktionary, CC BY-SA