おっちんとん

Meanings

1

noun, noun or participle which takes 'suru', intransitive verb

children's language

Kansai dialect children's word for sitting or sitting down. Used as a noun or with する as an intransitive verb.

おっ

ちん

と

ん

、

上手じょうず

に

でき

た

ね

。

You sat down so well!

座すわる
Standard Japanese verb for sitting down. おっちんとん is a dialectal children's equivalent.
お座すわり
Common children's word for sitting in standard Japanese. おっちんとん is the Kansai dialect version.

Kansai dialect children's word. The exact derivation is uncertain, but it is likely a playful reduplicative form related to sitting.