Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English -o-
← English -i- (link)
← English -mab (link)
← Ancient Greek -ό- (derived)
← Ancient Greek -ο- (mention)
← Latin -o- (borrowed)

→ English accelerometer (affix)
→ English selenology (affix)
→ English sadomasochism (compound)
→ English -ology (affix)
→ English naso- (affix)
→ English azotometer (affix)
→ English cacodemonomania (affix)
→ English frenuloplasty (affix)
→ English hemoglobin (mention)
→ English parthenogenesis (affix)
→ English terminology (mention)
→ English iconophile (affix)
→ English albuminurophobia (affix)
→ English discophilia (affix)
→ English lexiconophilia (affix)
→ English lexiconophilist (affix)
→ English acousticophobia (affix)
→ English brandophile (affix)
→ English blogosphere (mention)
→ English reflectoporn (compound)
→ English blogophile (affix)
→ English nomogram (affix)
→ English nomograph (affix)
→ English iconography (affix)
→ English acidophile (affix)
→ English nomology (affix)
→ English psephology (affix)
→ English declinometer (affix)
→ English scripophily (affix)
→ English meconophagist (affix)
→ English swingometer (affix)
→ English Japanophile (affix)
→ English planogram (affix)
→ English hallucinogen (affix)
→ English hebbosome (affix)
→ English redophile (affix)
→ English typography (affix)
→ English selenography (affix)
→ English naturopathy (affix)
→ English Americo- (mention)