\Thwart\, a. [OE. [thorn]wart, [thorn]wert, a. and adv.,
Icel. [thorn]vert, neut. of [thorn]verr athwart, transverse,
across; akin to AS. [thorn]weorh perverse, transverse, cross,
D. dwars, OHG. dwerah, twerh, G. zwerch, quer, Dan. & Sw.
tver athwart, transverse, Sw. tv["a]r cross, unfriendly,
Goth. [thorn]wa['i]rhs angry. Cf. {Queer}.]
1. Situated or placed across something else; transverse;
   oblique.
         Moved contrary with thwart obliquities. --Milton.
2. Fig.: Perverse; crossgrained. [Obs.] --Shak.

\Thwart\, adv. [See {Thwart}, a.]
Thwartly; obliquely; transversely; athwart. [Obs.] --Milton.

\Thwart\, prep.
Across; athwart. --Spenser.
{Thwart ships}. See {Athwart ships}, under {Athwart}.

\Thwart\, n. (Naut.)
A seat in an open boat reaching from one side to the other,
or athwart the boat.

\Thwart\, v. t. [imp. & p. p. {Thwarted}; p. pr. & vb. n.
{Thwarting}.]
1. To move across or counter to; to cross; as, an arrow
   thwarts the air. [Obs.]
         Swift as a shooting star In autumn thwarts the
         night.                                --Milton.
2. To cross, as a purpose; to oppose; to run counter to; to
   contravene; hence, to frustrate or defeat.
         If crooked fortune had not thwarted me. --Shak.
         The proposals of the one never thwarted the
         inclinations of the other.            --South.

\Thwart\, v. i.
1. To move or go in an oblique or crosswise manner. [R.]
2. Hence, to be in opposition; to clash. [R.]
         Any proposition . . . that shall at all thwart with
         internal oracles.                     --Locke.