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Webster 1913 Edition

Adj.

[L.

arreptitius

Snatched away; seized or possessed, as a demoniac; raving; mad; crack-brained.

[Obs.]

Odd,

arreptitious

, frantic extravagances.

Howell.

Adj.

[L. arreptus, of ad and rapio, to snatch. See Rapacious.]

Snatched away.

Crept in privily.

arreptitious ‎(comparative more arreptitious, superlative most arreptitious)