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1. To move away from something slowly, especially while floating on water. I guess the inner tubes drifted apart because they're now scattered across the pool.
2. To gradually become distant from someone after a period of closeness. Andrea and I never had a big fight or anything; we just drifted apart over the years, and now, I hardly ever see her.
drift apart(from each other )
1. . Lit. [for floating things] to separate as they drift. The boats drifted apart from one another. The boats drifted apart in the waves.
2. Fig. [for people] to lead their lives without contact with each other having been together or friendly. He drifted apart from his friends. As the years went by, they drifted apart.