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.
This year's sales are threefold last year's.
Means 'to become threefold' or 'to triple'. Used for changes in amount or size.
The population became threefold.
Means 'to make something threefold' or 'to triple something'. Transitive version.
We tripled the production volume.
Describing something that consists of three elements, layers, or aspects.
Means 'triple-layered' or 'threefold' in the sense of having three layers or aspects. Often used for physical layers or abstract structures.
This room is three times as large as that room.
It has a threefold meaning.
It is protected by a threefold wall.
Specifically means 'folded in three' (like a letter or brochure). More literal folding.
a threefold brochure
Means 'consisting of three parts' (e.g., a book, film, or plan). Formal or structured contexts.
This novel has a threefold structure.