Copula Avoidance: Is and Are

July 27, 2026· patterns

The copula—“is,” “are,” “was,” “were”—is the plainest way to link subjects to descriptions. AI text often avoids it, substituting phrases like “serves as,” “stands as,” “functions as,” or “boasts a.” The meaning stays; the simplicity leaves. Prose feels heavier than it should.

What copula avoidance looks like

Before: The dashboard serves as a centralized hub that functions as the single source of truth.

After: The dashboard is the source of truth for release status.

One copula. One job.

Why models avoid “is”

Training data associates simple statements with dryness and complex constructions with sophistication. Models also learn to vary sentence openings, which pushes them away from repeated “X is Y” patterns.

Unfortunately, “serves as” is not sophistication. It is padding.

Detection and readability

Copula avoidance correlates with nominalization clusters: “provides a solution” instead of “solves.” Classifiers pick up the bundle. Humans feel mild exhaustion.

I mark drafts by highlighting every “serves as,” “acts as,” and “features a.” Most delete cleanly.

Before and after table

Not every row is universal. “Connects” must be true functionally. Plain language still must be accurate.

Genre notes

Academic writing sometimes avoids “is” for hedging: “may be indicative of.” That is different from copula avoidance for flourish. Know which habit you are fighting.

Technical docs should prefer “is” for definitions: “A replica is a read-only copy.”

Revision workflow

Search for “as a” and “serves as.” Rewrite to copulas or strong verbs. Read the paragraph again; if it sounds like a press release, keep cutting.

REhume targets heavy nominalizations and copula workarounds because they stack with other AI tells. Combined cleanup beats whack-a-mole synonym swaps.

The principle

Simple linking verbs are not weak. They are fast. Save complex constructions for relationships that are genuinely complex.

Copula avoidance makes writing sound like it is trying to impress a rubric. Your readers want clarity, not gymnastics.

Nominalizations travel together

“Serves as” often neighbors “the provision of,” “the utilization of,” and “the implementation of.” Search for “-tion” and “-ment” nouns built from verbs you already have.

Before: The utilization of the API facilitates the provision of real-time notifications.

After: The API sends notifications in real time.

ESL and formal registers

Some writers avoid “is” because teachers marked it vague. Precision matters more than avoidance: “The bug is in the cache layer” is excellent if true.

REhume pass expectations

Expect rewrites to restore simple linking verbs. If a sentence becomes too blunt for your audience, add one qualifying clause—not a new nominalization stack.

Voice check

Read ten sentences aloud. If you run out of breath, you have noun piles. Split them with copulas and active verbs until breathing normalizes.

Plain “is” and “are” are signs of confidence. Use them unless a more precise verb exists—launch, ship, break, fix—not because “is” sounds weak.

Quick wins in existing drafts

Sort your document by passive voice percentage if your editor supports it. Copula avoidance often clusters in passive paragraphs. Converting one passive block to active voice frequently removes three “serves as” phrases at once.

When you run REhume, compare before and after for meaning drift in definitions. Definitions should stay crisp; they are where simple copulas belong most.

One-sentence test

If you cannot rewrite a “serves as” sentence into “X is Y” in one try, the underlying idea may still be fuzzy. Clarify the idea first, then pick the plainest verb available.