Is it 'brittleness' or 'a brittleness'? Use "brittleness" as an uncountable noun. Write "the brittleness of the pipeline," not "a brittleness" or "many brittlenesses."
Quick check
Count the causes, not the quality
You know "Brittle" well.
Keep going with the full learning path — more workplace contexts, related expressions, and practice using it yourself with feedback.
Continue with "Brittle" →There's more to "Brittle" than it seems.
You've got part of it, but the full learning path goes deeper into its nuances, workplace contexts, and when it sounds natural — then gives you practice using it yourself.
Learn "Brittle" in depth →The pattern: a quality, not a countable thing
The noun works well in a risk memo or review. It names a "quality," not an item you can count. In this sense, it takes no "a" and no plural. It works like "fragility" or "complexity."
"The brittleness of the model comes from one optimistic margin assumption" is correct.
"There are three brittlenesses in this model" and "a brittleness of the model" are both wrong -- "brittleness" doesn't take a plural or an indefinite article in this sense.
You may still need to name several weak points. Keep "brittleness" singular and list the "sources." For example: "the brittleness of the model comes from two places -- the margin assumption and the retention estimate." Do not call them "two brittlenesses."
Try it yourself
Fix DeltaGrid's noun phrase
The common mistake: treating it as countable
In this use, treating "brittleness" as countable is a grammar error.
The fix is simple. Use "the brittleness of X" or "some brittleness in X." If there are several causes, count the causes instead.
Practice scenarios
Practice using brittle in situations like:
- writing "the brittleness of the pipeline" correctly in a risk memo or retro doc
- catching "a brittleness" before it goes into an analytical document
- describing multiple sources of fragility without pluralizing "brittleness" itself
Useful practice phrases:
- "The brittleness of [X] comes from [dependency]."
- "There's some brittleness in [X], mainly from [cause]."
- "[X] has two sources of brittleness: [A] and [B]."
Want to actually use "Brittle" naturally at work?
Understanding it is one thing. Practice its nuances, see how it works in real workplace situations, and use it yourself with feedback.
Start the "Brittle" learning path →A single uncountable noun does the work that "three brittlenesses" cannot do.
Name the sources separately; keep "brittleness" itself singular.