1. The tendency to repeat several times in a meaningless manner the last syllable of a word, the last word of a sentence, or even the last part of a phrase.
2. The repetition of some or all words in one's statements.
3. A morbid repetition of another person's or one's own words.
4. Parrot-like repetition of words and phrases initially uttered by the patient himself/herself; seen in catatonic schizophrenia and in certain cerebral degenerative disorders.