ENGLISH
REFERENCE

creep up on

phr. v..
B2 Upper Intermediate Oxford

phr. v.. to move slowly and quietly toward someone so they do not see or hear you. You can also use it when a feeling or a date arrives before you realize it.

phr. v.. to approach someone stealthily or unobserved; figuratively, to reach a state or deadline gradually and imperceptibly.


SIMPLE

Don't creep up on me like that!

CONTEXTUAL

I was so busy with work that the deadline for the project really crept up on me.

COMPLEX

The fatigue of the long journey began to creep up on the hikers as the sun dipped below the horizon.

Particles
up on
Separability
inseparable
Pattern
creep + up + on + object
Usage

always requires an object, which can be a person, a time, or a physical sensation.

Teaching tip

highlight the dual usage: the literal physical movement versus the figurative sense of time or feelings (like tiredness or age) approaching unnoticed.

Pitfall

He crept on me up.He crept up on me.this three-part phrasal verb is inseparable; the object must follow both particles.

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