8 letters
- raincoat12
- rainouts10
- rambutan16
- ramiform17
- ratifier11
- rational10
- reanoint10
- reformat14
- reinform15
- reniform15
- retiarii8
- retiform14
- rifampin18
- rigatoni11
- riparian12
- romantic15
- romaunts13
- rosarian9
- rosarium12
- rotiform14
- routeman13
- ruminant14
- ruminate13
- rumoring15
- safranin13
- sainfoin13
- sartorii8
- sinfonia13
- sonarman13
- sonatina10
- tamarind13
- tamarins12
- tamboura15
- tarragon11
- timaraus12
- tinamous13
- tiramisu12
- titanium13
- trainful14
- training12
- trainman13
- trainmen13
- tramroad12
- triennia10
- triforia11
- trimaran12
- triumvir16
- trunnion12
- tubiform18
- turbofan16
- unafraid14
- unarming16
- unciform19
- unfairer13
- unifilar14
- uniforms16
- unionism14
- unionist11
- unornate11
- untiring13
- uranitic13
- urinemia13
- ursiform15
- variform18
- variorum16
- warfarin15