Morpheme
The smallest unit of meaning in a language, either free (standalone) or bound (requiring attachment).
Real World
The word 'unhappiness' contains three morphemes — the bound prefix 'un-', the free morpheme 'happy', and the bound suffix '-ness' — each contributing a distinct layer of meaning.
Exam Focus
Label every morpheme as free or bound and state its function — examiners reward systematic, exhaustive analysis.
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