ch /tʃ/

Rule Core

ch = /tʃ/ is a common English consonant digraph. When c+h appear together, they function as one sound, not two letters, and usually represent a voiceless affricate.

Articulation Guide

Start with the tongue touching the alveolar ridge like /t/, then release with friction like /ʃ/. Air flows out sharply; the vocal cords stay relaxed.

Word Analysis

• achievement: ch clearly marks /tʃ/ in the stressed syllable.
• armchair: the compound keeps a stable /tʃ/ sound.
• pinch: final ch is short, crisp, and fully pronounced.

Pitfalls

Do not confuse /tʃ/ with /ʃ/. Also note loanwords where ch = /k/ (chorus, school).