| Definition -
A test of linguistic productivity in which a person is given a novel (usually nonsense) word and is then asked to use it in some inflected form.
For example, "Here is a wug. There is another wug. Now there are two … what?" (answer: wugs)
Etymology - The test was created by Jean Berko Gleason, the primordial Wug Test being reported in his article The Child's Learning of English Morphology (Word 14:150-77 (1958)). To read it, click here.