Meaning of the word "sneak up on" in English

What does "sneak up on" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

sneak up on

US /sniːk ʌp ɑn/
UK /sniːk ʌp ɒn/

Phrasal Verb

1.

to approach someone or something quietly and secretly, often without being noticed

Example:
The cat tried to sneak up on the bird.
Don't let the enemy sneak up on you.
2.

to happen or develop without being noticed

Example:
Old age has a way of sneaking up on you.
The deadline for the project snuck up on us.