to cause or impose something unpleasant, harmful, or unwelcome upon someone or something
to cause pain, suffering, or distress, often as a result of illness, injury, or hardship
苦しめる,悩ませる
to make a place, substance, etc. dirty or harmful by adding dangerous material
to wait in a concealed location and launch a surprise attack on a target
待ち伏せする,奇襲する
to degrade or tarnish something pure and perfect, especially the reputation of someone
the harmful effects or potential for harm caused by a substance to living organisms or the environment
having the ability to cause damage or destruction, especially through chemical reactions
damaging to health both physically and mentally by being poisonous or unpleasant
harsh, providing an environment where life or growth is difficult or impossible