Greek spelling patterns

Ph, ch as /k/, y as a vowel, rh, ps and mn all travel together. A word with one of them is Greek, and usually has another.

Word origin patterns

ph / ch=/k/ / y=/ɪ/ / rh / ps / mn ORIGIN_GREEK_01

Useful pattern · High reliability · Common · Advanced · Reading

• /f/ ph: photo, graph
• /k/ ch: school, chorus
• /ɪ/ /aɪ/ y as a vowel: gym, myth, cycle
• /r/ rh: rhyme, rhythm

Where Wiggler teaches it: Skill 11: Advanced Patterns & Silent Letters · Skill 14: Prefixes & Final Mastery

Child explanation

Some words came into English from Greek, and they all look a bit alike: ph, a y in the middle, ch saying /k/. Photograph, gym and school are all Greek.

The rule

Greek-derived English words carry a recognisable set of spellings: ph for /f/, ch for /k/, y for a vowel, rh for /r/, and silent p in ps, pn and pt. Recognising one is a strong clue that the others may appear.

What is really going on

These are transliteration conventions rather than English spelling rules: ph for phi, ch for chi, y for upsilon, rh for rho with rough breathing. Because Greek vocabulary entered English mainly through science, medicine and scholarship, these spellings cluster in academic registers — which makes the pattern useful well beyond decoding, as a vocabulary cue.

Examples

Easy examples

photo, school, gym, rhyme

More examples

graph, phone, physics, chorus, chemist, echo, stomach, myth, system, symbol, rhythm, psalm

Advanced examples

philosophy, psychology, chronology, hypothesis, synonym, mnemonic, chlorophyll

Contrast pairs

• chorus versus chair — Greek ch versus English ch.
• gym versus give — Greek y as a vowel versus English g.
• photo versus foot — Greek ph versus English f.

Teacher note

This is one of the highest-leverage things an older reader can learn, because it converts a set of unrelated exceptions into one coherent group with a reason. It also pays off in vocabulary: a child who knows photo means light and graph means writing can work out photograph, telegraph, biography and photosynthesis without being taught any of them.

Related rules

• PH — ph — Always /f/, and always a sign the word came from Greek. One of the most reliable graphemes in English.
• CH and its three sounds — ch — /tʃ/ in chip, /k/ in school, /ʃ/ in chef. Each group has a cause — and the cause is where the word came from.
• The letter Y — y — The clearest case in English of position deciding sound. Y is a consonant at the start of a word and a vowel everywhere else — and which vowel depends on how many syllables the word has.
• Silent P in PS, PN and PT — ps- / pn- / pt- — At the start of a Greek-derived word, p before s, n or t is silent — psalm, psychology, pneumonia, pterodactyl.
• Silent H — h- / rh- / gh- / wh- — H is silent in hour, honest and heir, after r in rhyme and rhythm, and inside ghost and school-type spellings.
• French spelling patterns — ch=/ʃ/ / -que / -ette / ou / silent final consonant — Ch as /ʃ/, -que for /k/, -ette, and a silent final consonant in ballet and buffet. Later borrowings that kept French pronunciation.

• Next in Word origin patterns: French spelling patterns — ch=/ʃ/ / -que / -ette / ou / silent final consonant — Ch as /ʃ/, -que for /k/, -ette, and a silent final consonant in ballet and buffet. Later borrowings that kept French pronunciation.
• All reading rules

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