minnow

The word 'minnow' has a long history in English, traceable to the late Middle English 'menowe'. Its ultimate origin is obscure but is likely connected to an unattested Old English word, possibly related to the Old High German 'munewa', a type of fish. The core logic of the word has always been to denote a small, common freshwater fish. Over time, this specific zoological meaning expanded metaphorically in the 16th century to describe any small or insignificant entity, drawing a direct analogy from the fish's diminutive size and perceived lack of importance in the aquatic world. This evolution from a concrete biological term to an abstract descriptor of insignificance is a classic example of semantic broadening based on a salient physical characteristic.

The word 'minnow' is a simplex word of uncertain origin, likely entering Middle English from an Old English or early Germanic source. Its modern spelling and form do not allow for segmentation into productive, meaning-bearing morphemes in contemporary English.