1. extremely tired; exhausted
Usage: informal
2. crazy or mentally unbalanced
Usage: slang

Examples

• After working a double shift, I was completely whacked.
• The long hike left us all whacked by evening.
• She felt whacked after studying for twelve hours straight.
• That guy is totally whacked if he thinks that plan will work.
• His whacked ideas never make any sense to anyone.
• I’m too whacked to go out tonight.