Direct: implies speaking frankly and honestly, without sugarcoating.
Forthright: similar to direct, but emphasizes a confident and assertive manner.
Blunt: suggests a lack of tact or diplomacy, but can be seen as refreshingly honest.
Outspoken: highlights a willingness to express strong opinions without hesitation.
Candid: implies sincerity and honesty, often about sensitive or controversial topics.
Brash: implies a certain amount of arrogance or recklessness in the way one speaks.
Audacious: suggests daring and unconventional speech, often challenging established norms.
Unflinching: implies speaking one's mind without backing down, even in the face of opposition.
Daring: suggests taking risks with one's speech, perhaps saying things others wouldn't.
It's important to choose the word that most accurately reflects the specific situation and the speaker's intentions.