half-educated russian

• недоу́чка

  a half-educated person

• малогра́мотный

  semi-literate, half-educated, crude, raw

• малора́звитый

  underdeveloped, half-educated

• малоразвитой

  underdeveloped, half-educated

Examples

• Он не врач, а какой-то недоучка.

  He isn't a doctor, but some half-educated hack.

• Этот недоучка даже таблицу умножения не знает.

  That half-educated fool doesn't even know the multiplication table.

• Меня учил недоучка, поэтому я ничего не понял.

  I was taught by a half-educated teacher, so I didn't understand anything.