Difference Between Fewer and Less
Use fewer for things you can count individually (fewer apples, fewer people, fewer dollars). Use less for quantities you measure as a whole (less water, less time, less money). Simple test: if you can put a number before it, use fewer. Exceptions exist for time, money, and distance even when specific numbers are used.
Key Takeaways
- Fewer is for countable nouns - things that exist as discrete, individual units.
- Grocery store '10 items or less' signs are technically incorrect but universally used and accepted.
- When in doubt with ambiguous words, consider whether you would use 'many' (fewer) or 'much' (less).
Explanation
Fewer is for countable nouns - things that exist as discrete, individual units. You can have 1, 2, 3, or more of them. Examples: fewer calories, fewer mistakes, fewer cars, fewer employees, fewer than ten items. Each item can be counted separately.
Less is for uncountable (mass) nouns - things measured as a continuous quantity rather than individual units. Examples: less sugar, less traffic, less information, less effort, less noise. You measure amounts rather than count items.
Common exceptions: time, money, and distance often use 'less' even with specific numbers because we think of them as continuous measurements. 'Less than five minutes,' 'less than $20,' and 'less than two miles' are all standard, though grammatical purists might argue for 'fewer.'
The fewer/less distinction first appeared in 1770 when grammarian Robert Baker wrote that 'less' should not be used with countable nouns. Before that, 'less' was used freely with both types in English going back to King Alfred in 888 AD. Some linguists argue the 'rule' is actually a preference that was elevated to a rule by prescriptive grammarians, much like the debate over splitting infinitives. Nonetheless, following the distinction signals careful writing and is expected in formal, academic, and professional contexts.
A useful parallel test: if you would use 'many' before the noun, use 'fewer' to reduce it. If you would use 'much,' use 'less.' Many cars becomes fewer cars. Much sugar becomes less sugar. Many problems becomes fewer problems. Much rain becomes less rain. This many/much mapping is reliable because both pairs follow the same countable/uncountable grammar pattern in English.
Things to Know
- Grocery store '10 items or less' signs are technically incorrect but universally used and accepted. Like debating whether it's OK to end sentences with prepositions, some grammar rules are more flexible than others.
- When in doubt with ambiguous words, consider whether you would use 'many' (fewer) or 'much' (less).
- The same count/non-count distinction applies to many/much and few/little. Similarly, confusing empathy and sympathy depends on subtle context clues.
- Percentage and fraction contexts often use 'less' regardless: 'less than 50% of respondents' is standard even though respondents are countable, because the percentage itself is treated as a continuous measurement.