Overthwart

a. 1. Opposite; over the way or street. “Our overthwart neighbors.” Dryden. 2. Crossing at right angles. Entrance and access on all sides, by the felling of huge trees overthwart one another, was quite barred up. Milton. 3. Cross; perverse; adverse; contradictory. “Overthwart humor.” Clarendon.

n. That which thwarts; an unlucky circumstance. [Obs.] Surrey.