Authoritative

/əˌθɔːrɪˈteɪtɪv/

Meaning & Definition

adjective

Able to be trusted as being accurate or true; reliable.

The scientist provided an authoritative account of the study's findings.

Commanding and self-assured; likely to be respected and obeyed.

The principal gave an authoritative speech that commanded the students' attention.

Having the official authority; recognized as the most accurate or definitive.

The dictionary is considered the authoritative source for definitions in the English language.

Explicitly or implicitly claiming respect due to one's status or expertise.

He made an authoritative statement about the policies, drawing on years of experience.

From Medieval Latin 'authoritatīvus', from 'authoritas' meaning ‘authority’.

authoritative source:

A source of information considered reliable and trustworthy.

authoritative voice:

A voice that commands respect or has power.

Bossy

Stop being so authoritative; not everything has to be your way.

Know-it-all

I can't stand her; she's such an authoritative person.