Subtle
Part of speech: adjective
Definition: Hard to grasp; not obvious or easily understood; barely noticeable. Cleverly contrived. Cunning, skillful. insidious Tenuous; rarefied; of low density or thin consistency.
Example sentence: It's not subtle or restrained. It's not any of the things you like to think apply to your acting.
Harmful
Part of speech: adjective
Definition: of a kind likely to be damaging; injurious
Example sentence: Above all, we must avoid the pitfalls of tribalism. If we are divided among ourselves on tribal lines, we open our doors to foreign intervention and its potentially harmful consequences.