SuGoiSuす語彙すGrammar › N1 · 11 Formal and written style
〜と相まって: together with; combined with
N1 · 11 Formal and written style
Says two things work together and strengthen each other's effect.
Noun + と相まって / 相まった. Written. Both factors add up: 景気回復と相まって, 努力と運が相まって. The subject is usually a result like growth or an effect.
Examples
新商品の人気は、広告の効果と相まって急上昇した。
The new product's popularity shot up, helped along by the effect of the advertising.
彼の才能は、努力と相まって大きく花開いた。
His talent, combined with effort, bloomed greatly.