n. [ Ar. sadd barrier. ] A tangled mass of floating vegetal matter obstructing navigation. [ Central Africa ] [ Webster 1913 Suppl. ]

adv. Suddenly; unexpectedly. [ R. ] [ 1913 Webster ]

Herbs of every leaf that sudden flowered. Milton. [ 1913 Webster ]

n. An unexpected occurrence; a surprise. [ 1913 Webster ]

All of a sudden,
On a sudden,
Of a sudden, sooner than was expected; without the usual preparation; suddenly. [ 1913 Webster ]

How art thou lost! how on a sudden lost! Milton. [ 1913 Webster ]

He withdrew his opposition all of a sudden. Thackeray. [ 1913 Webster ]

a. [ OE. sodian, sodein, OF. sodain, sudain, F. soudain, L. subitaneus, fr. subitus sudden, that has come unexpectedly, p. p. of subire to come on, to steal upon; sub under, secretly + ire to go. See Issue, and cf. Subitaneous. ] 1. Happening without previous notice or with very brief notice; coming unexpectedly, or without the common preparation; immediate; instant; speedy. “O sudden wo!” Chaucer. “For fear of sudden death.” Shak. [ 1913 Webster ]

Sudden fear troubleth thee. Job xxii. 10. [ 1913 Webster ]

2. Hastly prepared or employed; quick; rapid. [ 1913 Webster ]

Never was such a sudden scholar made. Shak. [ 1913 Webster ]

The apples of Asphaltis, appearing goodly to the sudden eye. Milton. [ 1913 Webster ]

3. Hasty; violent; rash; precipitate. [ Obs. ] Shak. [ 1913 Webster ]

Syn. -- Unexpected; unusual; abrupt; unlooked-for. [ 1913 Webster ]

-- Sud"den*ly, adv. -- Sud"den*ness, n. [ 1913 Webster ]

n. [ Cf. F. soudaineté. ] Suddenness; a sudden. [ Scot. ] [ 1913 Webster ]

On a suddenty, on a sudden. [ Scot. ] Sir W. Scott. [ 1913 Webster ]