What’s the plural of “focus”?
The plural of focus is focuses or foci.
The main focus of the discussion was budget allocation.
The research examined several foci related to urban development.
The three primary focus of the presentation were on marketing.
The document lists various focuses points for action.
What’s the singular of focus?
Focus is singular. Focuses or foci is plural.
What does the word focus mean?
The noun and word focus is described in the dictionary as “a center of activity, attraction, or attention: the focus of the meeting was drug abuse. Put immigration into focus as a hot topic for commentators.”
Other Latin nouns in English
| singular | plural |
| focus | focuses or foci |
| octopus | octopi (or octopuses) |
| radius | radi (or radiuses) |
| fungus | fungi (or funguses) |
| alumnus | alumni (or almunuses) |
| syllabus | syllabi (or syllabuses) |
Associate “foci” with similar Latin plurals like “radii” or “fungi” to remember one plural form of “focus.”.
“Focus”, used in sentences
1. His life lacks a focus.
2. Get the binoculars in focus.
3. I wasn’t able to focus the camera.
4. She has an amazing ability to focus for hours at a time.
5. He’s successful, but he feels that his life lacks focus.
“Focuses”/”foci”, used in sentences
1. The menu changes quarterly and focuses on food from coastal regions worldwide.
2. He focuses on Enron which was the real biggie.
3. Charles Manson’s “family” were the foci of many murder investigations.
4. The excitable foci of the cerebral cortex are well myelinated long before the unexcitable are so.
5. The foci of the paper were the many reasons why people came to the U.S. and the ways they immigrated.
Origin of the word focus
From etymology online on focus (n.):
1640s, “point of convergence,” from Latin focus “hearth, fireplace” (also, figuratively, “home, family”), which is of unknown origin.
What’s the difference between they’re, their, and there?
Sources
Work Sheet
According to the post, what is the correct plural form(s) of “focus”?
Which of the following sentences uses the plural form of “focus” correctly, based on the examples provided?
What is the singular form of the word “focus”?
What grammatical number are “focuses” and “foci”?
The post lists other Latin nouns with -us/-i plurals. Which listed word’s primary Latin plural form ends in -i, similar to ‘foci’?
The city council discussed the key for urban development.
The different of light converged at the focal point.
The main of the meeting was budget allocation.
The post advises avoiding redundant phrases like “ points”.
The academic paper presented two main of study.
Frequently Asked Questions
What are the plurals of focus?
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How do I use focus plurals?
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What focus mistake is common?
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What is the singular of focus?
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How to remember ‘foci’ plural?
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Yash, D. "What’s the Plural of Focus?." Grammarflex, Jun 21, 2025, https://www.grammarflex.com/whats-the-plural-of-focus/.
