smoothness
nounHow smooth something feels or looks.
Syllables
2 syllables
Letters
Phonics breakdown
Phonics Rule: SM Blend
S and M blend together — you hear both sounds! Like in 'small' and 'smile'.
The blend SM combines /s/ and /m/ spoken quickly together.
Examples
Phonics Rule: OO (Long Sound)
OO often makes the long sound, like in 'moon' and 'food'.
The vowel team 'oo' has two sounds. The long sound /uː/ is more common and appears in words like 'moon', 'food', and 'school'.
Tip
OO like the moon — ooooo!
Examples
Phonics Rule: TH Digraph (Voiced)
TH can make a buzzy sound /ð/, like in 'this' and 'the'. You can feel your throat vibrate!
The voiced TH /ð/ is the vibrating version. Put your hand on your throat — you can feel it buzz. This sound appears in very common words like 'the', 'this', 'that', 'they'.
Tip
Voiced TH buzzes — this, that, the!
Examples
Phonics Rule: Suffix -NESS
Adding -NESS turns a describing word into a thing, like 'happy' → 'happiness'.
The suffix -ness turns an adjective into a noun. It means 'the state of being [adjective]'. 'Happy' → 'happiness' = the state of being happy.
Examples
What is SnapPhonics?
A phonics reference for teachers, parents and learners. Every English word, broken into the sounds that make it — with audio, syllables, and the rule behind each spelling.
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