Lapse (noun)

1. A temporary failure or decline.
2. A temporary error or mistake.
3. A temporary deviation from what is right, normal or expected.

Origin:

The word 'lapse' comes from the latin word 'lapsus' meaning 'slipping, falling, error, sin.'.

Examples:

1. The athlete suffered a lapse in concentration and made a crucial mistake.
2. The company experienced a temporary lapse in production due to technical difficulties.
3. The politician's approval ratings suffered a significant lapse after the scandal broke.
4. The musician's performance had a brief lapse in rhythm.
5. The memory lapse caused the student to forget an important detail on the exam.