sion ending

Core Rule

The -sion ending is a common noun-forming suffix indicating an action, process, result, or state. It frequently derives from verbs, as in decide → decision. In modern English, -sion is pronounced as a single sound unit, typically /ʒən/ or /ʃən/, rather than letter by letter. The exact sound depends on the preceding consonant or morphemic origin.

Pronunciation Guide

Primary stress usually falls on the syllable before -sion. For /ʒ/, place the tongue near the alveolar ridge and allow voiced airflow; for /ʃ/, use the same tongue position without vocal cord vibration. The final /ən/ is weak and reduced, with a relaxed jaw and minimal lip movement.

Word Analysis

• decision /dɪˈsɪʒən/: derived from decide; -sion = /ʒən/.
• tension /ˈtenʃən/: from tense; -sion = /ʃən/.
• exclusion /ɪkˈskluːʒən/: the long vowel before -sion leads to a stable /ʒən/ realization, clearly showing root + suffix structure.

Pitfall Alerts

Avoid pronouncing -sion as /sɪon/ or /saɪon/. Do not rely solely on spelling; accurate pronunciation depends on phonological context and word origin.