1) The contentiousness of the debate led to heated arguments among the colleagues.

2) His contentiousness makes it difficult to have a productive discussion with him.

3) The contentiousness of their relationship was evident to everyone around them.

4) Due to their contentiousness, the decision-making process took much longer than anticipated.

5) She avoided discussing politics with him because of his contentiousness.

6) The contentiousness between the rival teams was palpable during the game.

7) Despite the contentiousness of the topic, they managed to maintain a civil conversation.

8) His contentiousness often overshadowed his otherwise good intentions.

9) The contentiousness of the issue caused tension within the community.

10) They had to address the contentiousness within the group in order to move forward with the project.