The phrase "are daggers with" implies intense animosity and hostility between individuals. To convey the opposite meaning, we can use antonyms such as harmony, agreement, and amicability. These words signify unity, mutual understanding, and a peaceful coexistence. Other antonyms that can be used in this context include concord, accord, and cooperation, which embody a spirit of cooperation and compromise. By using these antonyms, we can shift the tone of a conversation from confrontational to cordial and promote a more constructive dialogue. Ultimately, the choice of words can greatly impact the nature of human relationships and interactions.