Lexicographers often hear complaints about people not using words precisely or accurately. However, the role of lexicographers is to document the actual usage of words, even if it is considered incorrect or loose. In this article, the author provides usage guidelines for the words “couple,” “few,” and “several.” The word “couple” originally referred to a romantic relationship between two people, but it has evolved to also mean a small indeterminate number. “Few” has always referred to a comparatively small number and may vary in its exact meaning. “Several” originally meant “distinct or separate” and has come to represent an indefinite number that is not large.
https://www.merriam-webster.com/grammar/couple-few-several-use