If you've ever typed "he sais" and then stopped mid-sentence wondering whether that looks right, you're dealing with one of the sneakiest mix-ups in English. The confusion isn't really about two competing spellings it's about one correct word (says) and one word that has quietly wandered in from a completely different language and doesn't belong in your sentence at all.

Let's clear it up for good.

The Short Answer

Says is correct. It's the third-person singular present tense of the verb say, used with subjects like he, she, it, or any singular noun ("the manager," "my sister," "the app").

Sais is not an English verb. It shows up in English only as the plural of sai, a three-pronged martial arts weapon. Outside of that narrow context, if you've written "sais" as a verb, it's a spelling error and a fairly common one at that.

Why Does "Says" Even Sound Like That?

Here's the part that trips people up before they even get to the spelling. "Says" doesn't rhyme with "days," "rays," or "plays." It rhymes with "fez" and "says" is pronounced "sez."

This is one of those quirks where English pronunciation drifted over the centuries while the spelling stayed frozen in place. The vowel sound in "say" shifted when followed by that final "s," but nobody bothered to update the spelling to match. So you end up with a word that looks like it should sound one way and actually sounds another. Once you know this, a lot of the confusion starts to make sense people are essentially trying to spell what they hear, and "sais" feels like a reasonable attempt at capturing that "sez" sound, especially if they're not thinking about it as the verb "say" plus an "s."

Where "Sais" Actually Comes From

The ending "-ais" isn't random. It's a legitimate verb ending just not in English. In French, verbs conjugated in the imperfect tense often end this way: je faisais ("I was doing"), il allais would be a similar shape if it existed (French actually uses il allait, but you get the pattern). People who've studied French, or who speak it natively, sometimes carry that ending over into English without noticing, especially when writing quickly.

Add to that the fact that many spell-checkers don't flag "sais" because it's a real word in French and a real (if obscure) plural noun in English and you get an error that slips through unnoticed. It looks plausible enough that autocorrect leaves it alone, which only reinforces the mistake over time.

The Grammar Rule You Actually Need

Strip away the confusion and the underlying rule is simple: in the present tense, the verb say takes an "s" when the subject is third-person singular.

Subject Correct Form

I say

You say

He / She / It says

We say

They say

So: "she says," "the teacher says," "the report says" always with the "s." Meanwhile "I say," "they say," "we say" never with it. This is the same subject-verb agreement rule that governs dozens of other English verbs (runs, walks, thinks), so once it clicks for say, it reinforces your instincts everywhere else too.

Common Slip-Ups Beyond the Sais Mistake

Even once someone has ruled out "sais" entirely, two other errors tend to show up in the same territory:

Mixing tenses mid-sentence. Writers sometimes drift from present to past without meaning to: "He says he was tired and said he needs rest." Pick one tense and stay in it: "He says he's tired and needs rest."

Dropping the "s" in questions and negatives. This one catches people off guard. When you add "does" or "doesn't," the main verb goes back to its base form: not "Does she says anything?" but "Does she say anything?" The "s" moves onto the auxiliary verb instead of sitting on the main verb English simply doesn't allow it in both places at once.

A Quick Way to Check Yourself

If you're ever unsure whether to use say or says, try this trick: mentally swap the subject for "she." If "she says" sounds natural with your sentence structure, then says is correct. If "she say" is what comes out, you need the base form instead. It's a fast, reliable gut check that works in almost every situation.

Another trick: remember that "says" rhymes with "fez." If you can hold onto that one odd little rhyme, you'll never second-guess the pronunciation again and once the pronunciation locks in, the correct spelling tends to follow naturally.

Why This Small Word Is Worth Getting Right

"Says" is one of the most frequently used verbs in English. It shows up in journalism, casual conversation, emails, texts, and academic writing alike "the report says," "my mom says," "the label says." Because it appears so often, a repeated mistake with it stands out more than an error with a rarer word would. A single "sais" in a professional email might not sink your credibility, but repeated slips chip away at how careful and polished your writing appears to a reader.

Getting comfortable with this distinction isn't just about memorizing a rule for its own sake. It's a small entry point into bigger writing habits subject-verb agreement, tense consistency, and paying attention to how your sentences actually read. Nail the small stuff, and the bigger structural choices in your writing tend to get easier too.

The Bottom Line

Says is always correct for third-person singular present tense.

Sais isn't an English verb it only exists as the plural of a weapon called a sai.

The pronunciation is "sez," not "sayz," which is exactly why people get tempted to misspell it.

When in doubt, swap in "she" and trust your ear.

Once this one settles in, you'll never have to pause over it again.