-tion sound

Rule Core

-tion is a high-frequency English noun suffix, largely from Latin. When a base ending in t/te combines with -ion, the pronunciation typically becomes /ʃən/. The written t remains, but the sound shifts through assimilation and reduction.

Articulation Guide

Place the tongue near the alveolar ridge for /ʃ/, lips relaxed. Glide into a weak /ə/ with continuous airflow, then finish with an alveolar /n/. Primary stress usually falls on the syllable before -tion.

Word Analysis

nation /ˈneɪʃən/ follows the standard -tion pattern. In contrast, misfortune ends in -tune, pronounced /tʃuːn/ or /tuːn/, not governed by the -tion rule. This highlights the need to read spelling structure carefully.

Pitfalls

Do not confuse -tion with -sion or -tune; similar spelling does not guarantee identical pronunciation.