Grammar fix

stack up

compare (with/to something else)

to be as good as or as effective as something or someone else, especially when compared directly; to measure up in comparison.

phrasal verbC1occasional

Hear it in context

Notice where the phrase sounds natural.

When you compare the new phone to last year's model, it really doesn't stack up.work
While online courses are convenient, some people feel they don't stack up to traditional classroom learning in terms of interaction and motivation.IELTS speaking

Fix the pattern

Pattern: stack up (against/to something/someone)

WrongHow does it stack up with the others?

RightHow does it stack up against the others?

Usually 'stack up AGAINST' (or 'to') — 'with' is less natural here.

Patternstack up (against/to something/someone)

Use it right

Choose the version that sounds natural in speech.

Stiff I am curious how our product compares with the competition.

Natural I wonder how our product stacks up against the competition.

'Stack up against' is the idiomatic 'compare/measure up'; the formal version is flatter.

Build natural chunks

Words that usually travel with it.

stack up + against
against rivalsto the originalwellfavourably

Don't confuse it

This sense is figurative and different from the literal sense of 'stack up' (to arrange things in a pile). Here, it means to compare the quality, effectiveness, or performance of something with another.

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