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Suffixes 23 words

tion suffix

Rule Core

The suffix -tion is a highly productive noun-forming ending meaning “action, process, or result.” Although spelled t + ion, it is typically pronounced /ʃən/, reflecting English morpho-phonemic simplification.

Pronunciation Guide

The /t/ blends with the following palatal glide, producing /ʃ/. The tongue moves toward the post‑alveolar area, lips stay relaxed, airflow remains smooth, and the ending /ən/ is unstressed and reduced.

Word Analysis

auction /ˈɔːkʃən/ clearly shows the /ʃən/ sound. In contrast, additional and atrocious contain the letter t but not the -tion suffix; their pronunciations follow different morphological rules, helping learners avoid false pattern transfer.

Pitfall Guide

Do not confuse -tion with -sion or -cian. Similar spelling does not guarantee identical sound or origin.

Phonics Breakdown

Tongue moves back toward post‑alveolar ridge, release /ʃ/, finish with weak /ən/

Sound Reference

  • Identify the morphological suffix before applying the sound rule
  • Memorize -tion as a single sound unit /ʃən/

Common Mistakes

Pronouncing -tion as /tɪon/
Applying the -tion sound to any word with letter t

Example Words

additional atrocious auction complexion concentration confidential connotation credential essentially exploitation

All Words (23)

additional atrocious auction complexion concentration confidential connotation credential essentially exploitation flirtation frustration fusion influential irritation multiplication presidential residential reunification starvation substantial suppression unification