Uncountable Nouns That Start with OBS

Explore 34 verified English uncountable nouns starting with OBS, including Observation, Obsession, Obstruction, Obscurity, Observance, Obscenity and Obsidian. Browse these mass nouns and non-count terms for substances and concepts by length below, or check quantifier and measurement rules in our noun grammar guide.

Refine list...
JUMP:
Sort:
Group:
Case:
View:
JUMP TO:
Select any word to view available definitions & photosSelect any word for details
Starts with OBSC
7 words
obscurity
obscenity
obscuration
obscureness
obscurantism
obsceneness
obscurement
Starts with OBSE
12 words
observation
obsession
observance
observability
obsessiveness
obsequiousness
observableness
obsessionality
obsessionalism
observationalism
obsecration
observancy
Starts with OBSI
2 words
obsidian
obsignation
Starts with OBSO
4 words
obsolescence
obsoleteness
obsoletion
obsoletism
Starts with OBST
9 words
obstruction
obstetrics
obstinacy
obstructionism
obstinateness
obstructiveness
obstipation
obstreperousness
obstriction

•Browse Uncountable Nouns by Letter (A to Z)

Select a starting letter to browse uncountable nouns
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWordsVocabulary HubPositive WordsNegative Words
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.