A vacuum is space with little or no matter, and the word can also describe a great lack. It comes from Latin vacuus and has two plural forms.
Quick answer
A vacuum is a space from which most or all matter has been removed, or a space containing little or no matter. Supplied sources also support a broader sense meaning a great lack of something. The word derives from the Latin adjective vacuus, and its documented plurals are vacuums and vacua. On the puzzle board, VACUUM qualifies for DOUBLE VOWELS because it contains adjacent U letters.
See the exact tile and its companions in the August 23, 2026 Connections puzzle.
Meaning, origin, and grammatical context
Merriam-Webster’s search snippet gives the compact definition “emptiness of space.” Cambridge expands that idea to a space from which most or all matter has been removed, or where there is little or no matter. Wikipedia similarly describes a vacuum as space devoid of matter. Together, these snippets support the space-and-matter sense without requiring additional technical claims.
Dictionary.com’s snippet supplies a broader use: a vacuum can describe a great lack of something. In that construction, the missing thing is identified by the surrounding phrase. A sentence such as “The departure left a vacuum in the schedule” uses “vacuum” to name a lack; it is not making a statement about matter in space.
The origin evidence says that vacuum derives from the Latin adjective vacuus. The same supplied result records two plural forms, vacuums and vacua. No date for that derivation is supplied, so the origin statement should remain limited to the Latin source.
Natural examples
These examples distinguish the supported senses and forms:
- “The definition describes a vacuum as a space with little or no matter.”
- “Her resignation left a vacuum in the committee’s plans.”
- “The index lists both vacuums and vacua as plural forms.”
- “He noticed the UU in VACUUM before considering its meaning.”
The first sentence uses the space-and-matter definition. The second is an illustrative use of the documented “great lack” sense. The third discusses grammar directly rather than selecting one plural for a specialized context. The fourth concerns the visible spelling used in a word puzzle.
When quoting the game tile, retain VACUUM in capitals. In ordinary prose, lowercase vacuum is appropriate unless another capitalization rule applies.
A common mistake: mixing the senses without context
The physical-space definition and the broader lack sense are related in wording but should not be collapsed into one unexplained claim. “A vacuum contains little or no matter” follows the supplied scientific-style definition. “A leadership vacuum” would use the broader lack sense. The noun after or around the word helps readers identify which meaning is intended.
Plural choice can also cause hesitation. The supplied evidence explicitly gives both vacuums and vacua, so declaring either one to be the sole possible plural would contradict that source. This article does not claim that the two forms occur with equal frequency or that one belongs to a particular field, because the snippets provide no such comparison.
Vacuum in Connections
VACUUM belongs to DOUBLE VOWELS with ANTIFREEZE, BAZAAR and SKIING. Its exact qualifying sequence is UU. ANTIFREEZE contributes EE, BAZAAR contributes AA and SKIING contributes II. The category does not require the four words to share a definition, origin or subject area.
The verified green placement and the complete answer set appear in the August 23, 2026 solved Connections board.
How to apply the group logic
Write or view each candidate exactly as supplied, then inspect every pair of neighboring letters. VACUUM contains two consecutive U letters. A valid companion must satisfy the same broad spelling relationship—adjacent matching vowels—even though its vowel may differ. That test selects ANTIFREEZE, BAZAAR and SKIING and preserves the official title DOUBLE VOWELS literally.
Avoid weakening the rule to “contains several vowels.” That would not identify the decisive adjacency shared by all four answers. Also avoid importing VACUUM’s scientific definition into the category explanation; the definition helps with language use, while UU solves this board. Confirm the remaining groups through the August 23, 2026 Connections group explanation.