Possible Clues:

• Does this sound more amphibious? That's it
• Retune (anag.)
• Disgust makes sodium turn to salt
• Genderless
• Not masculine nor feminine
• Neither her nor he is comparatively amphibious, by the sound of it
• Neither he nor she is the more aquatic, it seems
• It sounds like something more in the water, perhaps
• By the sound of it, it is more amphibious, perhaps
• Sounds more amphibious? That's it