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dissipate (verb) waste time, energy, money; weaken; scatter, cause to disappear.
A person dissipates money, energy, or time if they waste them. They spend them on a lot of useless things and finally lose them. When something becomes weaker and finally loses effect, it is dissipated. A person's interest in, say, music dissipates, if they lose interest in music. A person's anger dissipates if their anger becomes less and less and finally they are no longer angry. When you dissipate something you scatter it.
- In spite of his talent, he is unable to come up the proper way because he dissipates his time and money, spending them without a proper plan.
- At the innocent smile of the baby, the robber's intention to kill it dissipated, and left it unharmed.