prep across; from alde to side of.
2. overthwart ·adv across; crosswise; transversely.
3. overthwart ·adj crossing in kind or disposition; perverse; adverse; opposing.
4. overthwart ·noun that which is overthwart; an adverse circumstance; opposition.
5. overthwart ·vt to cross; to oppose.
6. overthwart ·adj having a transverse position; placed or situated across; hence, opposite.