This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

ad. From side to side; crosswise or transversely.

ad. So as to thwart, obstruct, or oppose; perversely.

preposition. From one side to the other of; across: "the Stars that shoot athwart the Night” ( Alexander Pope).

preposition. Contrary to; against.

preposition. Nautical Across the course, line, or length of.

ad. From side to side; across.

ad. Across the path (of something).

preposition. From one side to the other side of.

preposition. Across the line of a ship's course or across its deck.

preposition. Across the path or course of; opposing.

preposition. Across; from side to side of.

preposition. Across the direction or course of.

ad. Across, especially in an oblique direction; sidewise; obliquely.

ad. Across the course; so as to thwart; perversely.

Crosswise; from side to side; transversely.

In opposition to the proper or expected course; in a manner to cross and perplex; crossly; wrongly; wrongfully.

Across; from side to side of.

Nautical, across the line of a ship's course.

In opposition to; against; contrary to.

ad. at right angles to the center line of a ship

ad. at an oblique angle

"I call it athwart parking rather than parallel parking."

athwart the forefoot    athwart hawse   

athwartships   

across    sidewise    obliquely    perversely   

Court    Dort    Mort    Porte    Stuart    abort    assort    boart    bort    cavort   

untimed    critics.i    star-shot    40-degree    Inna    ovenlike    star-flecked    stillborn    smokey    atmy