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合する (がっする) Japanese meaning | Kotomora
Meanings 1
suru verb (special), transitive verb, intransitive verb
join together ; combine ; unite ; mix ; agree with
Covers both transitive (combining things) and intransitive (things coming together) uses. Also used for mathematical summation and for opinions or interests aligning.
Their opinions agreed, and the plan was decided quickly.
Similar words 合あ わせる 合わせる is a more common transitive verb for putting things together or matching. 合する is more formal and often used in written or abstract contexts.
合あ わさる 合わさる is the intransitive counterpart of 合わせる, meaning 'to come together' or 'to fit'. 合する can be used both transitively and intransitively, but is less common in everyday speech.
Etymology Derived from the kanji 合 (join, fit) with the verbal suffix する, using the reading がっ (a euphonic change from がふ). The exact historical derivation is uncertain, but it follows a common pattern for Sino-Japanese verbs.