This feminine noun denotes perversity or crookedness, appearing only in Proverbs 4:24 in the phrase "perversity of lips." It describes twisted or devious speech that deviates from straightforwardness. The root suggests turning aside or deviating from a straight path, applied metaphorically to moral character and especially to speech. The wisdom literature frequently contrasts straight, honest speech with crooked, deceptive words. Spanish "desvío" (deviation) captures this sense of departure from the right path.