Translation guide
The English word 'threefold' can mean 'three times as much' or 'having three parts'. This guide helps learners express these ideas naturally in Japanese.
Expressing that something is three times the amount, size, or degree of something else.
Use this pattern to say 'three times N'. Replace N with the thing being compared. This is the most common and neutral way.
今年の売上は去年の3倍です。
This year's sales are threefold last year's.
Describing something that consists of three elements, layers, or aspects.
This room is three times as large as that room.
Means 'to become threefold' or 'to triple'. Used for changes in amount or size.
人口が3倍になった。
The population became threefold.
Means 'to make something threefold' or 'to triple something'. Transitive version.
生産量を3倍にした。
We tripled the production volume.
三重の壁で守られている。
It is protected by a threefold wall.
Specifically means 'folded in three' (like a letter or brochure). More literal folding.
三つ折りのパンフレット
a threefold brochure
Means 'consisting of three parts' (e.g., a book, film, or plan). Formal or structured contexts.
この小説は三部構成だ。
This novel has a threefold structure.