thwart

To prevent the occurrence, realization, or attainment of.

To oppose and defeat the efforts, plans, or ambitions of (someone).

A seat across a boat on which a rower may sit.

Extending, lying, or passing across; transverse.

Eager to oppose, especially wrongly; perverse.

Athwart; across.

See the extract.

Opposition; defiance.

A seat across a boat on which the oarsman sits.

Lying or extending across or crosswise; cross; transverse.