1. One versed in ethology.

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

• theologist,
• etiologist,
• aetiolgist,
• aetiologst,
• aetiologsit,
• aetiologist,
• aetmologist,
• ethologic,
• etnologist,
• ethlologist,
• wthologist,
• sthologist,
• dthologist,
• rthologist,
• etholigist,
• ethoplogist,
• ethologiest,
• thologist,
• etoilogist,
• pethologist

• etiologic,
• etiological,
• anthologist,
• ethology,
• etiology,
• etiologist.

The adjective form of the word "ethologist" is "ethological".

The plural of the "ethologist" can be the "ethologists".

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