i-adjective
rural; unrefined; unsophisticated; provincial; uncouth
Slang adjective describing a person, style, or thing as having a rustic, old-fashioned, or unsophisticated feel, often with a slightly negative or teasing tone.
あの服、ちょっといなたい感じがするね。
Those clothes look a bit rustic, don't they?
彼の話し方はいなたいけど、それが逆に面白
His way of speaking is unsophisticated, but that actually makes it interesting.