IPA: /ˈnætʃərəlɪst/
KK: /ˈnætʃərəlɪst/
A person who studies or is knowledgeable about plants, animals, and the natural world, often focusing on their behavior and habitats.
The naturalist spent hours observing the birds in their natural habitat.
Naturalist → It is formed from "nature" (from Latin *natura*, meaning birth or character) and "-ist" (meaning one who practices or is concerned with). A naturalist is someone who is concerned with or studies nature.
Think of someone who is deeply interested in 'nature' ('natura') and practices or studies it ('-ist'). This helps you remember that a naturalist is someone who studies the natural world.