The only word I know when expressing slippery floor/road/etc, is slippery.<br/><br/>What words do you use below the sentences and other various situation?<br/><br/>The road is very ~<br/><br/>The mountain cliff we will go must be very ~<br/><br/>The stone you step on is very~<br/><br/>Be careful not to drop it(chocolate), it's surface is very ~