1. having no meaning or direction or purpose

- a meaningless endeavor

- a meaningless life

- a verbose but meaningless explanation

Similar word(s): unimportant, empty, hollow, vacuous, insignificant, mindless, nonsense, nonsensical, unmeaning, purposeless, insignificant, nonmeaningful

2. producing no result or effect

Similar word(s): useless, futile, ineffectual, otiose, unavailing

Sentences with meaningless as an adjective:

- The word "gugugu" is meaningless in English.

- All our efforts were ultimately meaningless.