I am writing an internship report and I wonder if I may use the adjective buggy. I mean, if a computer program has lot of bugs, is it correct to say that the program is buggy?

2 Answers 2


It depends on the formality of your report, (though in my experience reports are formal).

Formal I would use 'The program has multiple bugs'

Informal That's when it would be ok to say 'the program is buggy'


Yes, buggy is an adjective in common use in that sense, and Thomas Edison talked about bugs in as bugbears or "little faults and difficulties" in a letter almost 150 years ago in 1878.

It is more a conversational term, and would be used as a qualitative descriptor. Often reports look for greater precision, and quantitative descriptions, such as rates.

Code defects is a more formal term, and "defects per 1,000 non-comment lines of source code" is a relatively common way of quantifying the bugginess of the software.

  • Is bugginess a valid word? google doesn't know it
    – Suncatcher
    Commented Jan 5, 2019 at 1:38
  • Merriam-Webster does know it. How did I find out? Google told me. merriam-webster.com/dictionary/bugginess
    – Euan M
    Commented Feb 4, 2019 at 1:14
  • Well this isn't really useful because "code defect" is a noun and -as you point out- "buggy" is an adjective. So "defective" is the more appropriate substitute, but it's actually more vague. "Defective code" could mean code that is very slow, or that it doesn't do a good job qualitatively but has no logical/syntax errors in it.
    – Elliott
    Commented Jun 28, 2020 at 10:01
  • Personally I'm writing a report that's informal enough that I think that "bug" is okay, but "buggy" is just too informal. I discuss bugs too much in my report to write "code defect" every time. I could define some new word for "bug" just for the sake of formality, but I hate unnecessary formality. The use-case I have is "[...] makes it more likely that buggy programs will crash", which can be awkwardly rearranged to "[...] makes it more likely that a program will crash if it contains some bugs".
    – Elliott
    Commented Jun 28, 2020 at 10:01

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