What is pleonasmo?

Pleonasmo is a linguistic term that refers to the use of unnecessary or redundant words or phrases in a sentence. It is also known as tautology or redundancia in Spanish. Pleonasms are considered errors in writing or speech as they tend to dilute the meaning of the sentence. Examples of pleonasms are "the dark night," "end result," "free gift," "absolutely essential," and "old antique." Pleonasms can be easily avoided by carefully reviewing the sentences to ensure that each word adds something meaningful to the thought conveyed.