Subtle: alternatives and connections

Full of harm; injurious; hurtful; mischievous.

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Full of harm; injurious; hurtful; mischievous.

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Not palpable; that cannot be felt; extremely fine, so that no grit can be perceived by touch.

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Not palpable; that cannot be felt; extremely fine, so that no grit can be perceived by touch.

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Of or pertaining to the act or power of perceiving; having the faculty or power of perceiving; used in perception.

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Of or pertaining to the act or power of perceiving; having the faculty or power of perceiving; used in perception.

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Tending to elude; using arts or deception to escape; adroitly escaping or evading; eluding the grasp; fallacious.

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

Lying in wait; watching an opportunity to insnare or entrap; deceitful; sly; treacherous; -- said of persons; as, the insidious foe.

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

Quick; swift (to burn).

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.