not ... at all

even if ...,...cannot

very, exceedingly, awfully / (before a negative form) not at all, at all, by no means

pure, unmixed, genuine / selfless, pure / innocent

purity / selflessness, purity / innocence

pure

a male given name

mind, heart, spirit, soul; thoughts, ideas / attention, mind, interest / heart, feelings, emotion, emotional state / wholeheartedness, sincerity, true heart

(mathematics) pure mathematics

(archaic) second-person personal pronoun: you