What is the meaning of -ri?

Forms nouns, usually diminutive ones.

Owerri and Umuahia standard spelling of -li

identifies an action as certain and having occurred in the near past

alternative form of -eren

alternative form of -erie

genitive suffix

Rōmaji transcription of り

Used to form the present passive infinitive of regular verbs, except the third conjugation's ones.

Optionally used to mark the topic of a question. Gives a sense of courtesy.

plural of -re

Source: wiktionary.org