reverber

Example:The sound quickly dissipated as we moved farther away from the source.

Definition:To dissipate means to scatter or cause to disappear, often used in a figurative sense.

Example:The memories began to diminish as time passed.

Definition:To diminish means to make smaller in size, amount, or importance.

Example:He tried to quiet his voice but it was too loud to hear himself think.

Definition:To quiet means to make less noisy or to reduce noise.