1. Curiosity that motivates investigation and study
   - lust for learning, thirst for knowledge

Type of: curiosity, wonder

• exonuclease
• exophthalmia
• exophthalmic goiter
• exophthalmos
• exoplanet
• Exopterygota
• exorbitance
• exorbitant
• exorbitantly
• exorcise
• saddled
• saddled-shaped false morel
• saddler
• saddlery
• saddo
• Sadducean
• Sadducee
• Sade
• sadhe
• sadhu
• Sadi Carnot
• sadism
• sadist
• sadistic
• sadistically