The definition of fast is someone or something that moves quickly, is not easily moved or is firmly shut.(adjective)
Fast is defined as swift or ahead of time.(adverb)
Fast means to eat little or no food.(verb)
An example of fast is not eating for twelve hours before having blood drawn.
A fast is defined as a period of time during which you go without food.(noun)
An example of fast is not eating during daylight hours for Ramadan.
See fast in Webster's New World College Dictionary
Origin: ME < OE fæst, akin to Ger fest, firm, stable < IE base *pasto-, fixed, secure > Arm hast
Origin: ME faste < OE fæste < adj.
Origin: ME fasten < OE fæstan, akin to Ger fasten, Goth fastan, lit., hold fast < base of fast
See fast in American Heritage Dictionary 4
adjective fast·er, fast·est
Origin: Middle English
Origin: , from Old English fǽst, firm, fixed; see past- in Indo-European roots.
intransitive verb fast·ed, fast·ing, fasts
Origin: Middle English fasten
Origin: , from Old English fǽstan; see past- in Indo-European roots.
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