WordReference.com | Online Language Dictionaries

English Thesaurus | keystone

Forums

- See Also:
- - kerchief
  - kernel
  - kerosene
  - ketchup
  - kettle
  - kettledrum
  - key
  - keyboard
  - keyed up
  - keynote
  - keystone
  - kick
  - kick around
  - kick back
  - kick in
  - kick off
  - kick out
  - kick over the traces
  - kick the bucket
  - kick up one's heels
  - kickback
- Recent searches:
- View All

keystone

,

ⓘ One or more forum threads is an exact match of your searched term

definition | Conjugator | in Spanish | in French | in context | images

keystone
WordReference English Thesaurus © 2026

Synonyms:

mainstay, foundation

Is something important missing? Report an error or suggest an improvement.

🗣️Recent forum discussions about thesaurus entries:

Angular Stone [cornerstone / keystone] - English Only forum
Keystone in or to? - English Only forum
keystone/keystone area - English Only forum
XL - Keystone XL Pipeline - English Only forum

Visit the English Only Forum.
Help WordReference: Ask in the forums yourself.

Go to Preferences page and choose from different actions for taps or mouse clicks.

Translations: Spanish | French | Portuguese | Italian | German | Dutch | Swedish | Polish | Romanian | Czech | Greek | Turkish | Chinese | Japanese | Korean | Arabic

Links: ⚙️Preferences | Privacy Policy | Terms of Service | Support WR | Forums | Suggestions

Advertisements

Advertisements

Report an inappropriate ad.

WordReference.com

WORD OF THE DAY

GET THE DAILY EMAIL!

Become a WordReference Supporter to view the site ad-free.