Describes a direction or orientation to the side; often used in literary or formal contexts. The 'wickedness' and 'unreasonable' glosses are rare and archaic; they are not the primary modern meaning.
The tree fell sideways due to the wind.
He gave a sideways glance.
Standard kanji form for the reading よこざま.
Search-only kanji form; not a standard spelling.
Compound of 横 (yoko, 'side') and 様 (sama, 'state' or 'appearance'), with rendaku voicing to ざま. The exact historical derivation is uncertain, but the word has been used since classical Japanese.