まして
N1況して増して
[mashite]
Meanings
1.ExpressionAdverb
still more; to say nothing of; not to mention
2.ExpressionAdverb
still less
Examples
彼女は英語ができない、まして日本語は。
She can't speak English, let alone Japanese.
大人でも難しい、まして子供には無理だ。
It's hard even for adults, much less for children.
まして今の状況ではとても無理だろう。
Let alone in the current situation, it would be impossible.