uncertain
Pronounceduhn-SER-tuhn
adjNot sure about something.
adjNot known or decided yet.
adjLikely to change or be unpredictable.
adjNot steady or constant.
Syllables
3 syllables
Letters
Phonics breakdown
Phonics Rule: Prefix UN-
Sound“uhn”·/ʌn/
UN- means 'not' or 'the opposite of'. 'Unhappy' means 'not happy'.
The prefix un- is added to the beginning of a word to mean 'not' or to reverse an action. 'Happy' → 'unhappy' (not happy). 'Do' → 'undo' (reverse doing).
Tip
UN makes it undone — unhappy, unfair, unlike!
Examples
When C comes before the letters E, I, or Y, it makes the soft /s/ sound instead of the hard /k/ sound. This is called 'Soft C'.
Tip
C is soft before E, I, Y — the city is nice!
Examples
Phonics Rule: R-Controlled ER
Sound“er”·/ɜːr/
When R comes after E, it makes the “er” sound, like in 'her' and 'fern'.
ER makes the same sound as IR and UR — they all say “er”. ER is the most common spelling of this sound, especially at the end of words.
Tip
ER, IR, and UR all sound the same — Bossy R wins again!
Examples
Phonics Rule: Letter T
Sound“t”·/t/
The letter T makes the /t/ sound, like in 'top', 'tap', and 'ten'. The tongue tip taps behind the upper teeth.
T is a voiceless alveolar stop. The tongue tip touches the ridge behind the upper teeth and releases with a puff of air. Double T (tt) makes the same /t/ sound.
Tip
T taps — touch your tongue to make /t/!
Examples
Phonics Rule: AI says “uh” (-tain, -gain)
Sound“uh”·/ə/
At the end of a word in -TAIN or -GAIN, AI relaxes to the lazy schwa “uh” — 'mountain' ends like 'mount-uhn', not 'mount-TAIN'.
AI usually says long A “ay” (rain, train). But in the unstressed endings -tain and -gain the syllable is spoken quickly and the vowel relaxes to schwa “uh”: mountain, captain, certain, curtain, bargain. Say the word naturally and listen to the last syllable — it is “uhn”, not “ayn”. This is the same relaxing that turns the OU of famous into a schwa.
Tip
Mountains are tall but the ending is lazy — mount-uhn!
Examples
Phonics Rule: Letter N
Sound“n”·/n/
The letter N makes the /n/ sound, like in 'net', 'nap', and 'nut'. The tongue tip touches behind the upper teeth.
N is a voiced alveolar nasal — the tongue tip touches the ridge behind the upper teeth while voice hums through the nose. It is one of the most common consonants in English.
Tip
N hums through the nose — say /n/ and feel the buzz!
Examples
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