1. One who forms theories; one given to theory and speculation; not a practical man.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• tearist,
• theoris,
• theoriest,
• therisk,
• thrist,
• theoriets,
• theoirst,
• torist,
• tuorist,
• theroist,
• thelist,
• theapist,
• therorist,
• theropist,
• therpist,
• theorsist,
• therist,
• therisa,
• theris,
• thearpist

• throw stick,
• throstle,
• throwster.

The adjective form of the word "theorist" is "theoretical".

The plural of the "theorist" can be the "theorists".

The singular of the "theorist" can be the "theorist".