Morphemes in “decision”
“decision” has 2 morphemes: decide + -ion.
Spelling changes when the parts join: the boxes show the letters as written; the morphemes themselves are decide + -ion.
Each morpheme explained
| Morpheme | Type | Free / bound | Meaning |
|---|---|---|---|
| decide (written decis) | free root | free | reach, make, or come to a decision about something |
| -ion | derivational suffix | bound | action, process or result of |
How the word is built
decide → decision
Each step adds one affix to the word before it; the root “decide” is where the chain starts.
Morphemes are not syllables
Morphemes are units of meaning; syllables are units of sound. The boundaries often fall in different places, which is why “decision” splits one way for a morphology exercise and another for a syllable count.
Break any word into morphemes
Prefixes, roots and suffixes with glosses, free and in your browser.
Open the morphological analyzer →Related words
Segmentation derived from MorphyNet (Batsuren, Bella & Giunchiglia, 2021; CC BY-SA 3.0, built from Wiktionary), with hand-written affix glosses and root meanings from WordNet. Reviewed for classroom use; tell us if you spot an error.