IPA: /əˈθwɔrt/
KK: /əˈθwɔrt/
In a way that goes across something, often at an angle, or in a manner that opposes or obstructs.
The tree fell athwart the road, blocking our path.
In a position that is across or against something; used to describe something that goes from one side to the other.
The fallen tree lay athwart the path, blocking our way.
Athwart originates from Old English 'aþweard', meaning across or in opposition. The word combines 'a-' (meaning on or in) and 'þweard' (meaning toward or against). Thus, 'athwart' conveys the idea of being positioned across or in opposition to something.
Think of something being 'across' ('aþweard') from another, which helps you remember that 'athwart' means positioned across or against.