Definitions
There are 2 meanings of the phrase
Slip Away.
Slip Away - as a verb
Leave furtively and stealthily
Example: "The lecture was boring and many students slipped out when the instructor turned towards the blackboard"
Synonyms (Exact Relations)
slip outsneak awaysneak offsneak outsteal awayExample Sentences
"Time seems to slip away when I'm reading a good book."
"I watched the ship slowly slip away into the distance."
"He tried to catch the mouse, but it managed to slip away."
"My dreams always seem to slip away when I wake up."
"The memory of that day continues to slip away with time."