N3 — outside your level filter
or — either of the two listed options is acceptable
支払いは現金またはカードでお願いします。
shiharai wa genkin matawa kaado de onegai shimasu.
Payment is by cash or card, please. neutral
申込書は郵送または窓口でご提出ください。
moushikomisho wa yuusou matawa madoguchi de go teishutsu kudasai.
Please submit the application form by post or in person at the counter. formal
Variants
もしくはmoshikuhaformal
the stiffer twin, at home in contracts and regulations — 本人もしくは代理人; where both appear in one document, もしくは takes the smaller pair inside a larger または.
または
またはmatawaN3neutral