Search results for 'must':

must¹ auxiliary verb 1 used to express necessity • I must earn some extra money • Must you leave so soon? 2 used to express duty or obligation • You must help him. 3 used to express certainty • You must be Charles. 4 used to express determination • I must remember to go to the bank. 5 used to express probability • She must be there by now. 6 used to express inevitability • We must all die some time. 7 used to express an invitation or suggestion • You must come and see us soon • You must read her other books. Also used with the main verb merely implied • I must away. See also mustn't. noun (always a must) a necessity; something essential • Fitness is a must in professional sport. must needs see needs must at need.
ETYMOLOGY: Anglo-Saxon moste, originally as past tense of mot may¹.

must² noun the juice of grapes or other fruit before it is completely fermented to become wine.
ETYMOLOGY: Anglo-Saxon: from Latin mustum vinum new wine.

must³ noun mustiness; mould.
ETYMOLOGY: 17c.

musth or must noun (especially in to be in musth) a dangerous frenzied state in certain male animals, especially bull elephants in the breeding season.
ETYMOLOGY: 19c: from Persian and Hindi mast intoxicated.