Etymology

must

M3U1S1T1

Today it means: To do as a requirement; indicates that the sentence subject is required as an imperative or directive to execute the sentence predicate, with failure to do so resulting in a failure or negative consequence. Full definition →

Middle English moste ← Old English mōste ← Proto-Germanic *mōtaną
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must · verb, noun1

  1. Proto-Germanic · derived from*mōtaną
  2. Old English · inherited frommōste“had to”
  3. Middle English · derived frommoten“to have to”
  4. Middle English · inherited frommoste
  5. English todaymust

From Middle English moste ("must", literally, "had to", the past tense of Middle English moten (“to have to”)), from Old English mōste (“had to”), 1st & 3rd person singular past tense of mōtan (“to be allowed, be able to, have the opportunity to, be compelled to, must, may”), from Proto-Germanic *mōtaną. Cognate with Dutch moest (“had to”), German musste (“had to”), Swedish måste (“must, have to, be obliged to”). More at mote.

must · noun, verb2

  1. Latin · derived frommustum
  2. Old French · derived frommust
  3. Old English · inherited frommust
  4. Middle English · inherited frommust
  5. English todaymust

From Middle English must, from Old English must and Old French must, most, both from Latin mustum.

must · noun3

See musth.

Words from the same roots

Middle Englishmoten all →

mootmote

Proto-Germanic*mōtaną all →

Latinmustum all →

mustardmoistmusty

Etymology from Wiktionary, CC BY-SA 4.0.