There are prefixes of time and order (pre-, post-), of location (sub-, super-), for expressing the reversing of an action (de-, dis-), and go on. English words may take prefixes from one or two of those groups. Words of the latter types are, for example, unpremeditated or antidisestablishment . Is there a name for words, like unpremeditated or antidisestablishment , having two prefixes incorporated? Answer After some digging, I think there is a term that can satisfy all the varied thoughts and criticism thus far. A word having two (or more) prefixes incorporated is an: Augmentation Augmentation is modification of a word by any of the language's related forms (prefixing, suffixing, etc). The OED has this definition for an Augmentitive, adj. and n. : 2.b. Grammar. Of a word: augmenting the properties of the term whence it is derived, or generally expressing augmentation of an idea. (Augmentative words are generally formed by the addition of augmentative affixes .) Emphasis mine....