1. (noun) a decrease of transmitted power in a mechanical system caused by slipping

• decrease
• decrement

2. (noun) decline from a standard level of performance or achievement

• decline
• diminution

3. (noun) failing to hold or slipping out of place

• motion
• move
• movement

1. (noun) decline from a standard level of performance or achievement

• drop away
• drop off
• fall away
• slip

2. (noun) failing to hold or slipping out of place

• dislocate
• luxate
• slip
• splay