noun
farmer; bumpkin; yokel; peasant
Derogatory term for a farmer or someone from the countryside, implying unsophistication or rusticity. Often used in a mocking or dismissive way.
都会の連中は彼を田吾作扱いした。
The city folks treated him like a country bumpkin.
そんな田吾作みたいな格好でパーティーに行くのか？
Are you going to the party dressed like a yokel?
百姓 is a more neutral term for farmer, though it can also carry derogatory connotations depending on context. 田吾作 is explicitly derogatory and emphasizes rustic simplicity.
田舎者 means 'country person' and can be derogatory, but is broader and less specifically tied to farming. 田吾作 is more narrowly a mocking term for a farmer.
The name 田吾作 (Tagosaku) is a stereotypical male given name associated with farmers in Japanese culture, similar to 'Hodge' or 'bumpkin' in English. The exact origin is uncertain, but it became a generic, derogatory label for a rustic farmer.