boulder
nounA very large rock lying on the ground.
nounA large marble used in children's games.
verbTo climb on rocks without ropes as a sport.
Phonics breakdown
Phonics Rule: Letter B
The letter B makes the /b/ sound, like in 'bat', 'big', and 'bug'. Both lips press together then release.
B is a voiced bilabial stop — both lips press together and release with voice. It always makes the /b/ sound except when silent at the end of words after m (as in 'lamb' or 'comb').
Tip
B looks like a bat — and bat starts with /b/!
Examples
Phonics Rule: OU says /oʊ/
OU can say the long /oʊ/ sound, like in 'soul' and 'shoulder'.
In a small set of words, OU says the long-O /oʊ/ sound: soul, shoulder, boulder, dough, although.
Tip
OU can say oh — soul, shoulder!
Examples
Phonics Rule: Letter L
The letter L makes the /l/ sound, like in 'lamp', 'leg', and 'lip'. The tongue tip touches behind the upper teeth.
L is a voiced lateral approximant — the tongue tip touches the ridge behind the upper teeth while air flows around the sides. Double L (ll) makes the same /l/ sound.
Tip
L is for lamp — light it up with /l/!
Examples
Phonics Rule: Letter D
The letter D makes the /d/ sound, like in 'dog', 'day', and 'dig'. The tongue tip touches behind the upper teeth.
D is a voiced alveolar stop. The tongue tip touches the ridge just behind the upper front teeth, then releases with voice. It reliably makes the /d/ sound in almost all positions.
Tip
D is for dog — and dog starts with /d/!
Examples
Phonics Rule: Suffix -ER
Adding -ER can mean 'more' (bigger) or 'a person who' (teacher).
The suffix -er has two main uses: comparative ('big' → 'bigger' = more big) and agent ('teach' → 'teacher' = a person who teaches).
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.
Save words to study lists, build flashcard decks, and scan your own worksheets and books.