tada

The Japanese word "tada" (ただ) can have several translations and meanings depending on the context. Here are some of the common ones:

Just/Simply/Only:
    "Tada matte iru" (ただ待っている) means "Just waiting."

Free of charge:
    "Kore wa tada desu" (これはただです) means "This is free of charge."

Merely:
    "Tada no tomodachi" (ただの友達) means "Merely a friend."

Common/Ordinary:
    "Tada no hito" (ただの人) means "An ordinary person."