wordhoarder

noun
UK /ˈwɜːdˌhɔːdə/
US /ˈwɝːdˌhɔːrdər/

A wordhoarder is someone who collects and keeps lots of words.

My aunt is a wordhoarder who writes down every new word she hears.


OTHER MEANINGS

2. A person who saves words in notebooks or files instead of using them.

He is a wordhoarder with dozens of notebooks full of unused words.

3. A writer who piles up fancy words in a story.

The editor told the wordhoarder to cut half the adjectives.

4. A learner who memorizes many words but rarely speaks them.

She is a quiet wordhoarder who knows thousands of words but says little.