Truthfully means honestly and accurately, without lying or leaving out important details. When you answer a question truthfully, you tell exactly what happened or what you know, even if the truth feels uncomfortable or might get you in trouble.

The word captures something important: speaking truthfully means avoiding obvious lies, and it also means not twisting facts, not leaving out key information to mislead someone, and not exaggerating to make yourself look better. If your mom asks whether you finished your homework and you say “I did most of it,” that might be technically accurate but not truthfully answering what she really wanted to know.

People value truthfulness because it builds trust. When your friend asks, Truthfully, did you like my presentation?, they want your genuine opinion, not just polite words. When a witness in court promises to testify truthfully, they're making a serious commitment to accuracy.

Sometimes telling the truth requires courage. Admitting you broke something or explaining what really happened in an argument takes more strength than making excuses. The opposite of speaking truthfully is speaking deceptively or dishonestly.