GMAT Vocabulary Flash Cards @ englishpdf.com and englishteststore.com File 161 deceitful (adj) Fraudulent deceive (v) To mislead by or as by falsehood decency (n) Moral fitness decent (adj) Characterized by propriety of conduct, speech, manners, or dress deciduous (adj) Falling off at maturity as petals after flowering, fruit when ripe, etc decimal (adj) Founded on the number 10 decimate (v) To destroy a measurable or large proportion of decipher (v) To find out the true words or meaning of, as something hardly legible