Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

nais

noun
na·​is | \ ˈnāə̇s\

Definition of nais

1 plural naises\ -​sə̇z\ or naides\ ˈnāəˌdēz\ : a river nymph : naiad
2 capitalized [ New Latin, from Latin, naiad ] : a large genus of small aquatic oligochaete worms that is the type of the family Naididae

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for nais

Latin

Keep scrolling for more

Learn More about nais

Dictionary Entries near nais

Nairobi

Nairobi disease

nairy

nais

naish

naissance

naissant

Statistics for nais

Look-up Popularity

Comments on nais

What made you want to look up nais? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

recidivism

Listen to the pronounciation of recidivism

a tendency to relapse

Get Word of the Day daily email!

Test Your Vocabulary

Finance Words Quiz

  • a-piggy-bank
  • The etymology of mortgage is related most closely to which two words?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play
Ask the Editors
Word Games