1.
to shake one's head (in denial or refusal)
To move one's head side to side to indicate 'no' or disagreement.
彼は黙って首を横に振った。
He silently shook his head (to say no).
「無理だ」と首を振った。
"It's impossible," he said, shaking his head.
2.
to nod (when vertical)
When specified as vertical movement, indicates agreement or acknowledgment.
質問に首を縦に振った。
She nodded in response to the question.
STRUCTURE: 首 (neck/head) + を + 振る (to shake/swing)
DIRECTION MATTERS:
- 首を横に振る: shake head side to side (no, disagreement)
- 首を縦に振る: nod (yes, agreement)
- Without direction specified, usually implies side-to-side (no)
RELATED EXPRESSIONS:
- うなずく (to nod) - specifically means agreement/understanding
- 頷く (same as above, kanji form)
- 首をかしげる (to tilt one's head) - shows puzzlement
CULTURAL NOTE: In Japan, as in most cultures, shaking the head side-to-side means 'no' and nodding means 'yes.' However, Japanese people may also tilt the head or say "うーん" to soften refusal.
Related Words
Related:
うなずく (to nod)