1.
range of swing; amplitude; breadth of variation
The width over which something swings or varies, from one extreme to the other. Used literally for a pendulum's swing and figuratively for the range of someone's moods, performances, or ability.
感情の振り幅が大きい。
His emotional range is wide (he has big mood swings).
振り子の振り幅を測る。
To measure the swing of a pendulum.
あの俳優は役の振り幅が広く、どんな役でもこなす。
That actor has a wide range and can play any kind of role.
Literally the distance of a swing; figuratively the breadth between the extremes of someone's behavior, ability, or output.
COMMON COLLOCATIONS:
- 感情の振り幅: range of emotions / mood swings
- 振り幅が大きい: to have a wide range
- 役の振り幅: an actor's range of roles
NOTE:
Calling someone's 振り幅 'wide' is usually praise — it means they are versatile and can handle extremes.