buckteeth; prominent front teeth; projecting teeth
Refers to front teeth that stick out noticeably. Often used in a descriptive or mildly teasing way, but not inherently rude.
His buckteeth are his charming feature.
子供の頃、反っ歯を気にしていた。
When I was a child, I was self-conscious about my protruding teeth.
Standard kanji spelling with small-tsu, reflecting the geminate pronunciation.
Variant without small-tsu; less common but still used.
Mixed kana-kanji spelling; sometimes seen in casual writing.
From 反る (そる, to bend backwards) + 歯 (は, tooth), with gemination and rendaku. The small-tsu spelling reflects the pronunciation.