Hide

From IvaPedia

Syntax: hide

Syntax: sneak

Hide and Sneak are similar skills, both related to remaining undetected. Hide has a very high chance of success, but only works for as long as the character remains stationary. Sneak may be used when moving (including to sneak by monsters), but has a lower chance of success.

Shadow Meld is an addition to hide, using the same command, to allow virtually no chance of detection. Shadow Meld is usually a requirement for the ability Ambush.