11-Letter Words Starting with 'OCT'

A reference list of 11 English 11-letter words starting with 'OCT', such as Octahedrite, Octapeptide, Octuplicate and Octillionth. Use the interactive filters below to sort alphabetically or by length, and check definitions for every word.

Playing a word game? Score tiles & test blanks
Word Finder
Tap to refine list...
JUMP:
Sort:
Group:
Case:
View:
JUMP TO:
Starts with OCTA6 words
octahedrite
octapeptide
octagonally
octachordal
octanedioic
octastichon
Starts with OCTE1 words
octennially
Starts with OCTI2 words
octillionth
octingenary
Starts with OCTO1 words
octonocular
Starts with OCTU1 words
octuplicate
Wordmom is your complete guide to the English language. Whether you're looking up a definition, searching for the perfect synonym, or unscrambling letters for a word game, our comprehensive suite of tools is designed to help you find the right word, every time.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE®, Words With Friends®, Wordle®, and related game titles or tournament codes are registered trademarks of their respective owners (including Hasbro, Mattel, Zynga, The New York Times, NASPA, and WESPA). Wordmom is an independent reference utility for educational and entertainment purposes, not affiliated with, sponsored, or endorsed by these entities. All game names are referenced strictly under nominative fair use for compatibility.