There are a total of 34 4-letter words containing 'rt', and the number may vary in different dictionaries. You can specify the dictionary and order.

• airt ₄
• arts ₄
• arty ₆
• bort ₇
• cart ₇
• curt ₈
• dart ₅
• dirt ₅
• fart ₇
• fort ₇
• girt ₆
• hart ₆
• hurt ₇
• kart ₈
• mart ₇
• mort ₇
• orts ₄
• part ₇
• pert ₇
• port ₇
• rort ₄
• sort ₄
• tart ₄
• tort ₄
• vert ₈
• wart ₇
• wert ₇
• wort ₇
• yurt ₇
• cert ₆
• arti ₄
• dort ₅
• gart ₅
• gert ₅

There are 34 4-letter words containing rt in the well-known word game dictionary, 29 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 34 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 29 in the Words with Friends (WWF) dictionary.