1. past tense and past participle of slip; moved smoothly or accidentally out of position
2. past tense and past participle of slip; lost one’s footing or balance
3. past tense and past participle of slip; moved quietly or secretly

Examples

• The book slipped from her hands onto the floor.
• He slipped on the wet pavement and fell down.
• She slipped quietly out of the room during the meeting.
• The company’s profits slipped last quarter.
• The ring slipped off her finger into the sink.
• I slipped the note under the door.
• His grades have slipped since he started working more hours.