1) He tactlessly criticized her outfit in front of everyone.

2) She tactlessly brought up his failed business venture at the dinner table.

3) The manager tactlessly announced layoffs to the entire team.

4) He tactlessly shared his unfiltered opinions on the project during the meeting.

5) She tactlessly asked a co-worker about their recent breakup.

6) The customer tactlessly complained about the slow service to the waitress.

7) He tactlessly joked about a sensitive topic during a serious conversation.

8) She tactlessly made fun of her friend's new haircut.

9) The speaker tactlessly made a joke that offended many in the audience.

10) He tactlessly interrupted the speaker to share his own unrelated story.