functioning since

USAGE SUMMARY

The phrase "functioning since" is correct and usable in written English.
You can use it to indicate the starting point of an operation or activity that has been ongoing from a specific time or date. Example: "The system has been functioning since 2010, providing reliable service to our clients."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

29 human-written examples

Doctors did not remove Elliott's own kidneys, which have ceased functioning since the transplant.

The New York Times - Sports

Only two of its three stabilizing gyroscopes have been functioning since December, and NASA feared the consequences of its losing another gyroscope and plunging to earth on its own.

The New York Times

Under that schedule the House and Senate will have to approve at least one more temporary stop-gap spending measure to keep several government agencies functioning since the legal authority for the Federal government expired with the end of the fiscal year on Sept. 30.

The New York Times

I have kept the pond more or less functioning since we moved in, and I have no desire to see it colonized by toads the size of soccer balls that secrete toxin from glands in the back of their heads strong enough to kill cats and small or infirm dogs.

The New York Times

At that time the court was using a revised version of the Diagnostic and Statistical Manual IV, or the DSM IV-TR, as one of a few guides to define someone with intellectual disability: an IQ of approximately 70 or lower, with trouble learning or intellectually functioning since youth (the newest version of the DSM puts less emphasis on IQ, but still cites a measure of approximately 70 or below).

The Guardian

A 100 kW TRIGA Mark I research reactor has been functioning since 1960 at the Nuclear Technology Development Center (CDTN), Belo Horizonte, Brazil.

Progress in Nuclear Energy

Human-verified similar examples from authoritative sources

Similar Expressions

31 human-written examples

In that respect, Crystal Palace was the blueprint for how capitalism has functioned since.

The Guardian - TV & Radio

The Palestinians' 132-strong parliament has barely functioned since 2006, when Israel arrested 40 Hamas members.

The Economist

You need to find out how the person has functioned since childhood, and screen to see whether they have other physical and mental health problems".

The Guardian

In North America a U.S.-Canadian International Joint Commission has functioned since 1909 with general authority over the boundary waters.

Encyclopedia Britannica

The Palestinian Parliament has not functioned since Hamas seized control of Gaza in 2007, a year after winning Palestinian elections.

The New York Times

Expert writing Tips

Best practice

When using "functioning since", ensure the subject is something that can logically be described as 'functioning', such as a system, organization, or organ. Avoid applying it to abstract concepts like feelings or ideas.

Common error

Avoid using "functioning since" with subjects that do not logically 'function'. For example, instead of saying "My belief has been functioning since childhood," use "My belief has existed since childhood" or "I have believed this since childhood."

Linguistic Context

The phrase "functioning since" serves as a time adverbial, modifying a verb to specify when an action or state began and continues to the present. Ludwig provides examples demonstrating its use in various contexts.

Expression frequency: Common

Frequent in

News & Media

33%

Science

52%

Formal & Business

7%

Less common in

Encyclopedias

2%

Wiki

2%

Reference

0%

Ludwig's WRAP-UP

The phrase "functioning since" is a common and grammatically correct way to indicate that something has been in operation or active from a specific point in the past until now. Ludwig AI confirms its acceptability and provides numerous examples from reliable sources like the New York Times and The Guardian, which showcase its usage across news, science, and business contexts. When writing, ensure the subject is logically capable of 'functioning', and consider synonyms such as "operational since" or "active since" for variety.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

operational since

Replaces "functioning" with a synonym emphasizing active operation.

in operation since

Similar to "operational since" but uses a slightly different structure.

active since

Emphasizes the ongoing activity or existence.

working since

A more informal substitute for "functioning".

running since

Suggests continuous operation, especially for systems or programs.

effective since

Highlights the time from which something has been in effect or valid.

valid since

Indicates the period something has been considered legitimate or correct.

in effect since

Formally indicates when a rule, law, or agreement has been in place.

established since

Focuses on the founding or creation date.

around since

Informal way to indicate something has existed for a period.

FAQs

How to use "functioning since" in a sentence?

Use "functioning since" to indicate when something started working or operating and has continued to do so. For example, "The factory has been "operational since" 2005.".

What can I say instead of "functioning since"?

You can use alternatives like "operating since", "in operation since", or "active since" depending on the context.

Is it correct to say "functioned since"?

While grammatically understandable, "functioned since" isn't as common or natural-sounding as "functioning since". The present participle emphasizes the ongoing nature of the function.

What's the difference between "functioning since" and "established since"?

"Functioning since" emphasizes the ongoing operation of something, while "established since" focuses on the date of its founding or creation. For instance, "The company has been functioning since 2010," means it's been operating since then, whereas "The company was established since 2010" means it was founded in that year.