Rubato (noun)

1. A slight deviation from a strict tempo in music, especially in order to give greater expression to a phrase.
2. A manner of performing a piece of music in which the tempo is deliberately varied for expressive effect.

Origin:

Italian, literally "stolen", past participle of rubare.

Examples:

1. The pianist used rubato to add emotion to the piece.
2. The conductor allowed the musicians some rubato in order to give the music more expression.
3. Rubato is a technique that is commonly used in classical music.
4. The singer's use of rubato added a unique interpretation to the song.
5. Rubato allows the performer to add personal touch to a piece.