The 40 tells · Shape and punctuation · No. 36
Three adjectives in a row in your writing: why readers notice
Smell Possible triad
"Fast, simple, and secure." Lists of three neat words are a habit of machine-written copy. The rhythm sounds finished, so the writer stops before saying anything specific.
Keep the one adjective you can prove, and prove it. Two specific claims beat three general ones.
Before
Our service is fast, reliable, and affordable.
After
Most repairs are done the same day, and the price is fixed before the work starts.
The fix
Keep the one you can prove.
What the checker matches
A pattern match. In plain terms: possible triad.
\b(\w+), (\w+),? and (\w+)\b(?=[.!])