baneful

archaic

(archaic) Poisonous, deadly. / Harmful, injurious.

Japanese Meaning

有害な / 害を及ぼす / 致命的な / 毒性のある

The apothecary warned that the baneful herb, though attractive, would seep into the water and sicken the livestock.

薬剤師は、その有毒な薬草が一見魅力的でも、水に染み出して家畜を病気にするだろうと警告した。

Sense（1）

(archaic) Poisonous, deadly.

Sense（2）

Harmful, injurious.

This contempt of the understanding in early life has more baneful consequences than is commonly supposed […]

more baneful

（ comparative ）

most baneful

（ superlative ）