Otousan is someones father. Chichi is referring to your own [My dad]
there are other sayings, more or less formal:
informal: papa, tousan
formal: otousan, chichi
he wa ching wung choo
The Japanese symbol for dad is 父
Konnichiwa otosan(Kon-ee-chee-wa oto-san)
DAD: "What IS he doing?" MOM: "It's because he's just a kid."
you are 3/4 Japanese
The meaning of did dad say as dad did is the dad did whatever his dad told him to do.
You may say "[anata no] otousan ha saikou desu."
tousan means "dad" in Japanese.
Otousan
otousan
you say ''appa'' in order to say dad in tamil
His dad is Japanese