Pronunciation: [snˈiːk ˈʌp tuː] (IPA) 
The correct spelling of "sneak up to" is /snik ʌp tu/. In this phrase, "sneak" is pronounced as /snik/ with a short "e" sound, followed by a "k" sound ending with an unvoiced "k". "Up" is pronounced as /ʌp/ with a short "u" sound, followed by a "p" sound ending with an unvoiced "p". "To" is pronounced as /tu/ with a short "u" sound, followed by a "t" sound ending with an unvoiced "t".
"Sneak up to" is a phrasal verb that refers to the act of approaching someone or something stealthily or quietly, often with the intention of surprising or catching them off guard. It is typically used to describe a covert or furtive action where one tries to get closer to someone or something without being noticed or detected.
In this context, "sneak" means to move silently or cautiously, avoiding detection, while "up to" signifies the purpose or destination of the sneaking action. The phrase suggests a careful and discreet approach in order to achieve a particular objective, such as observing or surprising someone.
This phrasal verb can be used in various situations. For instance, a person might sneak up to a friend's house or room in order to play a surprise prank on them, or a spy might sneak up to an enemy's location to gather information covertly. It can also imply a mischievous or playful element, as when children try to sneak up to their parents to scare them.
Overall, the term "sneak up to" encapsulates the idea of quiet, surreptitious movement towards a person or object, often associated with secrecy, surprise, or a hidden motive.
