1. silly or mischievous behavior; playful tricks or pranks
Usage: informal; usually plural
2. dishonest or questionable activities; trickery or deception
Usage: informal; usually plural

Examples

• The kids were up to their usual shenanigans in the backyard.
• Stop these shenanigans and get back to work!
• The teacher caught them in the middle of their shenanigans.
• There were financial shenanigans going on at the company.
• The politician was accused of electoral shenanigans.
• We won’t tolerate any shenanigans during the exam.
• Their shenanigans finally got them in trouble with the principal.