Bottleneck names a specific thing: the one point that caps throughput, not every slow or annoying step in a process. Its collocations reflect that precision -- a small set of verbs and one preposition pattern do almost all the work, and stepping outside them is one of the fastest ways to sound non-native even in an otherwise correct sentence.
The most natural verb collocations are identify/find/diagnose the bottleneck, become/create a bottleneck, and remove/eliminate/ease/resolve the bottleneck. The preposition pattern is a bottleneck in [stage] and a bottleneck to [growth/scale] -- never "a bottleneck of."
Diagnosing register: finding and naming it
Before a bottleneck can be fixed, someone has to locate it -- and the verbs here are diagnostic, not corrective.
"We need to identify the bottleneck before adding more people, and right now the bottleneck in the approval flow is the single compliance reviewer who has to sign off on every contract."
"Identify the bottleneck" is the standard opening move. "A bottleneck in [stage]" is the preposition pattern that names where it lives -- in the approval flow, in fulfillment, in onboarding.
Resolving register: naming the fix and the effect
Once the bottleneck is located, the language shifts to what closes it and what it's blocking.
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Start learning for free →"Manual testing has become a bottleneck for the release, so we're trying to ease it by automating the first review -- it's become a real bottleneck to scaling the team."
"Ease/resolve/remove the bottleneck" names the fix. "A bottleneck to [growth/scale/throughput]" names the larger thing it's capping -- not just one process stage, but an outcome the business cares about. The passive verb form, "is bottlenecked by," works too: "the release is bottlenecked by manual QA testing."
What doesn't collocate
Two mistakes are common. The first is the verb "make": "this new hire will make a bottleneck in the review process" is unnatural -- use create, cause, introduce, or become instead. The second is the preposition "of": "there's a bottleneck of the approval workflow" is the most common ESL trap for this word; the natural pattern is always "bottleneck in," never "bottleneck of." A related risk is calling something a bottleneck when it's actually a one-time delay -- a client call starting late because of a train delay isn't a bottleneck; a recurring approval queue that holds up every request for days is.
Practice scenarios
Practice using bottleneck in situations like:
- naming the one recurring point that caps throughput, not every inconvenience
- choosing "in" over "of" when naming which stage the bottleneck lives in
- describing the fix with the right verb -- ease, resolve, remove -- rather than "make"
Useful practice phrases:
- "We need to identify the bottleneck before [next step]."
- "The bottleneck in [process/stage] is [cause]."
- "This has become a bottleneck to [growth/scale/throughput]."
A bottleneck only sounds precise when it's paired with a verb that diagnoses or resolves it, not one that manufactures it.
Get the preposition right, and the sentence names exactly where the throughput is capped.
Lyra Practice helps advanced non-native English professionals learn the nuance of high-value workplace expressions and practice using them in realistic scenarios, so their English sounds natural, precise, and senior at work. Try Lyra Practice.