Uninflected word

An uninflected word or simple word, in linguistic morphology, is a word which has no affixes indicating declension or conjugation.

An example is word, which has no affixes such as in conjugated verbs ending in "-ed" or "-ing", or declined nouns ending in "-s" or "-es".

Some words, such as particles, cannot be inflected at all.

In many inflected languages, such as Greek and Russian, some nouns and adjectives of foreign origin are uninflected; for instance, the name Abraam in Greek (from Hebrew), the modern Greek word mple (French bleu), the Italian word computer, and the Russian words kenguru (kangaroo) and pal'to (coat).