Jamieson, Fausset and Brown on Proverbs 2:16-19

16-19. Deliverance from another danger.

the strange woman--This term is often used for harlot, or loose woman (Jud 11:1, 2), married (Pr 7:5, 19) or not (1Ki 11:1), so called, because such were, perhaps at first, foreigners, though "strange" may also denote whatever is opposed to right or proper, as "strange fire" (Nu 3:4); "strange incense" (Ex 30:9).

flattereth--literally, "smooths."

her words--(Psa 5:9).