Definition of thwart

• a. - Situated or placed across something else; transverse; oblique.
• a. - Fig.: Perverse; crossgrained.
• a. - Thwartly; obliquely; transversely; athwart.
• prep. - Across; athwart.
• n. - A seat in an open boat reaching from one side to the other, or athwart the boat.
• v. t. - To move across or counter to; to cross; as, an arrow thwarts the air.
• v. t. - To cross, as a purpose; to oppose; to run counter to; to contravene; hence, to frustrate or defeat.
• v. i. - To move or go in an oblique or crosswise manner.
• v. i. - Hence, to be in opposition; to clash.