What is an Uncountable Noun?
Mass & Noncount Noun Rules, Partitive Phrases, Examples & Word Lists
An uncountable noun (also called a mass noun or noncount noun) names a substance, liquid, abstract state, or collective category that cannot be counted directly with numbers and always takes singular verb agreement (e.g., water, advice, furniture, information).
Because English treats uncountable nouns as undivided wholes, pairing them with a, an, cardinal numbers, or plural -s endings breaks the clause. When you need to specify an exact quantity of a noncount noun, you count a partitive container or measure phrase in front of it, such as two pieces of advice, three loaves of bread, or a glass of water.
• Table of Contents
• Understanding Uncountable Nouns
To diagnose an uncountable noun, test whether it can follow the quantifier much in a question or negative clause (How much water?, not much furniture) while rejecting the indefinite article a/an. Most noncount nouns fall into three semantic groups:
Abstract Ideas & Categories
Intangible states, fields of study, and collective umbrella nouns (e.g., knowledge, advice, furniture, luggage).
Liquids, Gases & Weather
Fluids, gases, and natural phenomena without fixed boundaries (e.g., water, milk, oxygen, rain, sunshine).
Materials, Food & Granules
Solid materials, cut foods, and substances made of tiny grains (e.g., wood, bread, cheese, rice, sand).
• See it in Context
Quantifiers like enough, some, any, and a lot of pair smoothly with uncountable nouns without requiring a plural ending. Swap the noncount nouns below to see how each one fits the same singular frame.
• The 3 Rules of Uncountable Nouns
Every uncountable noun obeys three grammatical constraints: singular verb agreement, no indefinite articles (a / an), and no plural -s inflection.
Mandatory Singular Verb Agreement
Uncountable nouns always trigger a singular verb (is, was, has, seems) and singular pronoun (it).
- The traffic is backed up for two miles.
- The news was unexpected.
No Indefinite Articles ("A" or "An")
Because "a" and "an" mean "one single unit", they cannot precede an uncountable noun.
- I need some advice before signing.
- Did the clerk give you any information?
No Plural "-s" Inflection
Uncountable nouns do not take "-s" or "-es" endings to indicate a larger quantity.
- We ordered new equipment for the lab.
- He checked all of his luggage at the gate.
• Tricky Uncountable Nouns
The nouns below cause frequent grammar errors because they either end in the letter -s or name collective categories made up of countable physical objects.
News, Physics & Mathematics
Although these nouns end in "-s", they are singular uncountable nouns and never take plural verbs or plural pronouns.
Furniture, Luggage & Equipment
You can count the individual items (a chair, a suitcase, a drill), but the umbrella category noun itself is strictly noncount.
Advice, Homework & Work
Where many European languages allow "an advice" or "two works", English requires countable substitutes like "a tip", "an assignment", or "a job".
• How to Count the Uncountable (Measure Words)
To express a specific number of an uncountable noun, place a countable partitive phrase (such as a piece of, two cups of, or three loaves of) in front of it. The partitive noun takes the plural ending while the uncountable noun remains singular.
"A piece / bit / item of..."
Isolates a single unit of an abstract noun or collective category (advice, information, furniture, equipment, news).
"A cup / glass / bottle / liter of..."
Quantifies liquids and gases by counting the vessel or metric volume holding the substance.
"A loaf / slice / bar / grain of..."
Counts a physical shape or individual granule of a bulk solid (bread, soap, chocolate, rice, sand, truth).
• Top 50 Most Common Uncountable Nouns
This reference list gathers 50 common uncountable nouns across abstract categories, foodstuffs, liquids, and raw materials. Click any word card below to view its dictionary definition.
• Browse Uncountable Nouns by Letter
• Uncountable Noun Finder & Search Tool
Use the filter form below to search uncountable nouns by starting letter, ending letter, contained letters, or word length.
• Test Yourself: Find the Uncountable Nouns
Click the uncountable noun in each of the five sentences below.