Hard C before A, O, U and consonants

C is /k/ everywhere except before e, i and y. This is the default, and it is nearly exceptionless.

Soft and hard sounds

ca / co / cu / c + consonant HARD_C_01

Strong rule · High reliability · Very common · Beginner · Reading and spelling

• /k/ hard c: cat, cot, cup

Where Wiggler teaches it: Skill 1: First Sounds & Blending

Child explanation

C says /k/ in cat, cot and cup. It only changes when e, i or y come next.

The rule

C represents /k/ before a, o, u, before a consonant, and at the end of a word. This is the default value and the one a decoder should try first.

What is really going on

Hard c is the unmarked value and is essentially exceptionless in the contexts listed. Its practical importance is as the spelling counterpart: a writer choosing between c and k for /k/ uses c before a, o and u, and k before e, i and y — which is why kite, kept and kind are spelled with k rather than c.

Position in the word

• Beginning of a word — Before a, o, u or a consonant. For example: cat, cot, cup, clap, crab.
• End of a word — In longer words, as -ic. For example: picnic, magic, traffic, plastic.

When this rule works

• The next letter is a, o, u, or a consonant.
• The c is at the end of a word.

When this rule does not work

• The next letter is e, i or y — see soft c.
• The c is part of ch or ck.

Examples

Easy examples

cat, cot, cup, can, cut

More examples

cap, cod, club, clap, crab, cream, class, cross, picnic, magic, plastic, traffic

Pseudo-words

Made-up words that follow the rule. A child who reads these has the pattern rather than the vocabulary.

cag, clom, crub

Contrast pairs

• cat versus city — The letter after c decides everything.
• cot versus cent
• cup versus cycle

Teacher note

Teach hard c from the first week — it is one of the six letters in the s, a, t, p, i, n, c, k group and appears in more early words than k does. Wait until it is entirely automatic before introducing soft c; otherwise children start hesitating over cat, which is a worse outcome than not yet knowing city.

Related rules

• Soft C before E, I and Y — ce / ci / cy — C is /s/ before e, i and y. One of the clearest context rules in English — and it has real exceptions, so it should not be taught as absolute.
• CK after a short vowel — ck — One sound, /k/, and a strict position rule: ck only ever follows a short vowel at the end of a syllable. Never at the start of a word.
• Hard G — ga / go / gu / g + consonant — G is /g/ before a, o, u and consonants, at the end of words, when doubled, and in a long list of Germanic words where soft g would be expected.
• The letter X — x — The only English letter that normally represents two sounds at once. X is /ks/ at the end of a word, /z/ at the start, and /gz/ when the stress falls after it.

• Previous in Soft and hard sounds: Soft C before E, I and Y — ce / ci / cy — C is /s/ before e, i and y. One of the clearest context rules in English — and it has real exceptions, so it should not be taught as absolute.
• Next in Soft and hard sounds: Soft G before E, I and Y — ge / gi / gy — G is often /dʒ/ before e, i and y — but get, give, girl and gift all break it. Far less reliable than soft c, and the difference must be taught.
• All reading rules

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