The name "Keenon" is spelled with five letters and pronounced as /ˈkiːnən/. The initial sound is a voiceless velar plosive /k/, followed by a long vowel sound /iː/. The third sound is a voiced alveolar nasal /n/ and the final two sounds are a short vowel sound /ə/ and a voiceless alveolar nasal /n/. The spelling of the name likely derives from the Irish surname "Keenan," sometimes spelled "Kehenan," which means "descendant of Caoinlean," a personal name meaning "fair-headed."
The name "Keenon" is of American origin and is believed to be a modern variant spelling of the Irish name "Cianán". "Cianán" is a diminutive form of the Irish name "Cian", which means "ancient" or "enduring". The name "Cian" is derived from the Gaelic word "cian", meaning "long" or "distant". Therefore, the etymology of the name "Keenon" suggests connections to Irish heritage and the meaning of longevity or endurance.