Tion vs Sion Spelling Words

The -tion and -sion endings are one of the most common spelling traps in English. They usually sound identical — a soft "shun" — but one is written with a t and the other with an s. Why is it decision and not decition? Why information and not informasion?

This practice test covers 20 B1–B2 words. You'll work with common -tion nouns (information, education, competition, celebration) and the trickier -sion words that usually come from verbs ending in -de, -se, or -mit — like decide → decision, confuse → confusion, and permit → permission.

One hint to keep in your head: if the base verb ends in -de, -se, or -mit, the noun almost always takes -sion. Otherwise, -tion is the safer default.

Listen to each word, type what you hear, and get instant feedback. Miss one? It comes back around. Want the full pattern first? Read our guide to 8 English spelling rules that actually work.