We've all stared at a sentence that feels slightly heavy, dragging its feet across the page. Often, the culprit is a tiny, four-letter word hiding in plain sight. The word is that. While it's one of the most frequently used terms in the English language, its presence—or absence—dramatically alters the rhythm, clarity, and authority of your prose.
Writers usually sprinkle that into sentences out of habit rather than necessity. They write, "She knew that she needed to finish the report," without realizing the extra word adds zero meaning. Mastering when to keep that and when to delete it changes your writing from cluttered to crisp. Let's look at how this tiny word impacts your sentences and how you can use it with intention.
The Problem with Unnecessary Words
Every extra word in a sentence demands a tiny fraction of your reader's mental energy. When you scatter unneeded filler across paragraphs, that mental toll adds up, causing reader fatigue.
Consider this sentence: "He realized that the project was overdue." Now strip out the filler: "He realized the project was overdue." The second version punches harder. It gets straight to the point without changing the meaning by even a fraction.
Professional editors spend a large portion of their time hunting down redundant instances of this specific word. According to guidelines from The Chicago Manual of Style, many conjunctions and relative pronouns can safely vanish without harming grammatical integrity. Eliminating them speeds up the narrative pace and forces your verbs and nouns to carry the weight they were built for.
When You Actually Need the Word
Delete too recklessly, and you create structural trainwrecks. The word serves crucial grammatical functions that keep complex sentences from collapsing into ambiguity.
Introducing Restrictive Clauses
You need that when you introduce a restrictive clause—information vital to identifying the noun it modifies. If you remove it, the sentence changes its core meaning or breaks down entirely.
- Incorrect deletion: "The laptop that crashed during the presentation is on my desk." becomes "The laptop crashed during the presentation is on my desk."
- The fix: The second version sounds broken because the clause defines which laptop you mean.
When the clause restricts or defines the noun specifically, keep the word in place.
Smoothing Out Syntax and Timing
Sometimes, removing the word creates an awkward collision of nouns and verbs. Read this aloud: "She hoped the manager approved the budget." For a split second, your brain reads "hoped the manager" as a single action before realizing the manager is the subject of a new clause.
Adding the word back in prevents that momentary cognitive stumble: "She hoped that the manager approved the budget." The word acts as a speed bump, telling the reader's brain that a new thought is beginning.
Testing Every Instance in Your Drafts
You don't need to memorize dense grammatical rules to fix your usage. You can use a simple mechanical test while editing your drafts.
- Locate every instance of the word in a paragraph.
- Read the sentence aloud with the word deleted.
- Check if the meaning changes or if the sentence sounds clumsy.
- Keep the word only if it prevents a stumble or clarifies a restrictive clause.
If the sentence reads smoothly without it, hit backspace. You'll usually find that cutting five or six instances per page instantly sharpens your voice.
Common Mistakes Writers Make
Even experienced writers fall into recurring traps regarding this specific grammatical element.
The Confusion with Which
Writers often swap that and which interchangeably, but they serve different jobs in American English. Use that for restrictive clauses (essential to meaning) and which for non-restrictive clauses (extra details, usually set off by commas).
- Right: "The car that has a flat tire belongs to me."
- Right: "My car, which I bought in 2020, runs great."
Mixing these up creates grammatical confusion that undercuts your professional credibility.
Stacking Multiple Clauses
Another common trap involves using the word multiple times in a single breath: "He believed that the team understood that the deadline was Friday." This creates a monotonous rhythm. Break the thought up or strip out the unnecessary instances to restore flow.
Frequently Asked Questions
Is it always grammatically incorrect to use the word?
No. It's a legitimate part of speech. The goal isn't elimination; the goal is intentional use. Delete it when it's dead weight, but keep it when clarity or rhythm demands it.
How many times should I use it per page?
There is no hard numerical limit. Instead of counting instances, focus on whether each specific instance earns its spot by preventing a reading stumble or clarifying a restrictive clause.
Does removing it improve search engine optimization?
Search engines don't penalize or reward the word specifically. However, writing concise, clean prose improves readability scores, keeps visitors on your page longer, and lowers bounce rates—all metrics that support strong performance.
Can automated grammar checkers catch every misuse?
Most basic spell-checkers ignore redundant instances because the sentence remains grammatically correct either way. Advanced editors or human review are usually required to catch stylistic bloat.
