Stationary vs. Stationery
“Stationary” is an adjective meaning not moving or not changing; “stationery” is an uncountable noun for writing materials such as paper, pens, pencils, and envelopes. Their pronunciations are effectively the same in the cited dictionary entries, so meaning is the reliable distinction.
Use “stationary” for something not moving or not changing: “a stationary car.” Use “stationery” for writing materials: “office stationery.” The final -ary form describes stillness; the -ery form names paper and writing supplies.
Key details
Choose the right form
| Meaning/function | Choose | Example cue |
|---|---|---|
| not moving | stationary | stationary car |
| not changing | stationary | stationary rate |
| paper or writing supplies | stationery | office stationery |
Pronunciation is not a dependable differentiator here; choose by meaning and word class.
Quick tests
movement test
Does the word describe something that is not moving or not changing?
If yes: Use “stationary.”
If no: If you mean writing materials or paper supplies, use “stationery.”
Caveat: The adjective also covers “not changing,” not only physical movement.
supplies test
Could you replace the word with “writing supplies” or “paper goods”?
If yes: Use “stationery.”
If no: Check whether an adjective meaning still/unchanging is intended.
Caveat: “Stationery” is normally uncountable as a category noun, so avoid assuming every individual item is “a stationery.”
Usage notes
Further guidance
Meaning Test
Movement/state versus writing supplies cleanly separates the two in ordinary usage.
Sound Warning
Because the dictionary pronunciations are the same in ordinary UK/US transcription, sound alone is not a useful spelling test.
Stationary
Cambridge defines “stationary” as an adjective meaning not moving or not changing.
Stationery
Cambridge defines “stationery” as an uncountable noun for materials needed for writing, including paper, pens, pencils, and envelopes.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- STATIONARY definition (opens in a new tab)Cambridge Dictionary · Meaning and word class of stationary
- STATIONERY definition (opens in a new tab)Cambridge Dictionary · Meaning and word class of stationery