Where does GrammarNook's word-form data come from?

Every past-tense, plural, and confusable-word entry draws on openly-licensed sources (primarily Wiktionary, CC-BY-SA), cross-checked against standard dictionary and usage references. Full sourcing and attribution is on the Methodology page.

Why does the answer come before the explanation?

Because that's the question people actually type — "past tense of lead" or "plural of cactus." The correct form appears in the first line of every page, with the real etymology, rule, and examples underneath for anyone who wants the full picture.

Is GrammarNook free to use?

Yes — every lookup, tool, and guide is free. There's an optional paid Grammar Cheat-Sheet Bundle (PDF) for anyone who wants a printable reference, and a donation link for anyone who wants to support the site.

The correct form, answered first.

Paste a sentence and every word people mix up gets checked against 375 researched pairs — with a verdict on the sentence you actually wrote.

Runs in your browser. Nothing you type is uploaded.

246+ irregular verbs202+ tricky plurals375+ confusable pairs40 grammar-rule guides

Tools that answer your sentence, not a general question

Confusable-Word Checker

Paste a paragraph. Every word with a confusable twin is flagged, with a verdict on your sentence where the surrounding words settle it and the distinction where they don't.

Plural & Possessive Builder

Type a noun, get all four forms — including compound titles like "editor in chief" and Latin plurals like "addendum", where the plural does not land on the last word.

Punctuation Reference & Checker

Pick a mark and see correct and incorrect versions of the same sentence side by side, then run your own sentence through a mechanical punctuation check.

All tools →

Most-Confused Word Pairs

"affect" vs. "effect""its" vs. "it's""your" vs. "you're""there" vs. "their""there" vs. "they're""their" vs. "they're""then" vs. "than""to" vs. "too""to" vs. "two""too" vs. "two""lose" vs. "loose""whose" vs. "who's"

See all 375 confusable pairs →

Why GrammarNook

Most grammar sites either bury the answer under paragraphs of throat-clearing, or give you a bare answer with no real explanation. GrammarNook does both in the right order: the correct form first, underlined so it's unmistakable, then the real etymology, the actual rule, and example sentences that are true of that specific word or pair — never a swapped-word template reused across entries.

Looking for a word for a word game instead of a grammar answer? Our sister site SnagWord has a deep word-list and dictionary reference built for exactly that.

FAQ

Where does GrammarNook's word-form data come from?: Every past-tense, plural, and confusable-word entry draws on openly-licensed sources (primarily Wiktionary, CC-BY-SA), cross-checked against standard dictionary and usage references. Full sourcing and attribution is on the Methodology page.
Why does the answer come before the explanation?: Because that's the question people actually type — "past tense of lead" or "plural of cactus." The correct form appears in the first line of every page, with the real etymology, rule, and examples underneath for anyone who wants the full picture.
Is GrammarNook free to use?: Yes — every lookup, tool, and guide is free. There's an optional paid Grammar Cheat-Sheet Bundle (PDF) for anyone who wants a printable reference, and a donation link for anyone who wants to support the site.