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still more; even more; all the more
still less; even less
彼の話を聞くと猶更不安になった。
Hearing what he said made me even more anxious.
真相を知れば猶更彼を許せなくなるだろう。
If you learn the truth, you'll find it even harder to forgive him.
雨が降り出して猶更帰りたくなくなった。
It started raining and I became even more reluctant to go home.