Online English Dictionary and Vocabulary Builder


1. [s] sanctioned by established authority; "an authoritative communique"; "the authorized biography"

2. [s] having authority or ascendancy or influence; "an important official"; "the captain''s authoritative manner"

3. [s] of recognized authority or excellence; "the definitive work on Greece"; "classical methods of navigation"

similar words

1. [a] official

2. [a] influential

3. [a] standard

add to myVocab      login      register   

Look up words in the English4Today Online Dictionary and then add them to your personal dictionary (myVocab).

Turn your word lists into tests for yourself, your friends or your students ... add a translation ... make vocabulary sets and flash cards.

All you need to start your own personal dictionary web is a free English4Today membership.

Do you know the meaning of ...

Random Members' Question

Question from:
Kiga in Japan

"Is it correct to write the 2000s as in the 1900s? How do you pronounce the 2000s?"

View the answer

English grammar software checks your grammar and spelling, and gives feedback as you write!