-og

-o- + -g (frequentative suffix)

• IPA^(key): [oɡ]

-og

1. (frequentative suffix) Added to a stem - often an onomatopoeia - to form a verb expressing a (quickly) repeating or continuous action.

   vacog (“to chatter - to shut and open the mouth quickly in the cold”)

   mosoly (“smile”) → mosolyog (“to smile”)

• (frequentative suffix) Harmonic variants:

  -g is added to words ending in a vowel

  -og is added to some back vowel words

  -ag is added to other back vowel words

  -eg is added to unrounded front vowel words

  -ög is added to rounded front vowel words

• Appendix:Hungarian suffixes

From Proto-Celtic *-ākos, from Proto-Indo-European *-eh₂kos, *-eh₂ḱos, from a-stem suffix *-eh₂- + adjectival suffix *-kos, *-ḱos. Akin to Irish -ach, Latin -ācus, -īcus and English -y.

• IPA^(key): /ɔɡ/

-og

1. adjectival suffix - used to derive adjectives from nouns: arfeddog
2. suffix of possession: belonging to, -'s (e.g., taeog)
3. suffix of agency: one who does something, -er, -or (e.g., tywysog)