GMAT Vocabulary Flash Cards @ englishpdf.com and englishteststore.com File 344 inflexible (adj) That can not be altered or varied influence (n) Ability to sway the will of another influential (adj) Having the power to sway the will of another influx (n) Infusion infrequence (n) Rareness infrequent (adj) Uncommon infringe (v) To trespass upon infuse (v) To instill, introduce, or inculcate, as principles or qualities