right beside; directly to the side
Emphasizes that something is immediately adjacent, not just nearby. Often used with に or の.
He sat right beside me.
The seat directly next to me was empty.
Standard kanji spelling; commonly used in news and everyday writing.
Compound of 真 (ま, 'true' or 'direct') and 横 (よこ, 'side'). The prefix 真 intensifies the meaning, giving 'directly to the side'.