GMAT Vocabulary Flash Cards @ englishpdf.com and englishteststore.com File 315 illogical (adj) Contrary to the rules of sound thought illuminant (n) That which may be used to produce light illuminate (v) To supply with light illumine (v) To make bright or clear illusion (n) An unreal image presented to the senses illusive (adj) Deceptive illusory (adj) Deceiving or tending to deceive, as by false appearance imaginable (adj) That can be imagined or conceived in the mind