It's the icing on the cake.

Here, is on the cake an adjunct or a complement of the noun icing?

2 Answers 2


A complement is something that is required to complete a grammatical structure.

An adjunct is something that adds something, but is not essential for the grammar.

In a sentence "It is a red cat", a red cat is a complement, because "It is" is not complete without it. But red is an adjunct, because "It is a cat" is complete.

So you can answer your own question if you can say whether "It's the icing" is grammatically complete or not.

  • 1
    I think "it's the icing" is grammatically complete. So, "on the cake" is an adjunct?
    – listeneva
    Commented Apr 4, 2018 at 15:51
  • That's good reasoning. You could write your own answer now.
    – James K
    Commented Apr 4, 2018 at 15:56
  • But there's this thinking in the back of my head hanging around saying that "it's the icing" might not mean the idiomatic "it's the icing on the cake", and therefore that "on the cake" might be a complement. What I'm asking is, just because "it's the icing" is grammatically complete, does it necessarily mean that "on the cake" is an adjunct? In It's a report on the accident., for example, It's a report. is grammatically complete, but I think on the accident is not an adjunct but a complement.
    – listeneva
    Commented Apr 4, 2018 at 16:18

In this case, "icing on the cake" is an idiom. It only has the meaning that it does if all of the words are included. As such, it functions as a single noun in a sentence.

You can't separate part of that noun and maintain any of its meaning. So asking if "on the cake" is an adjunct or a complement of "icing" is like asking if "ngbird" is an adjunct or a complement of "mocki". I.e. I don't think this is a meaningful question.

  • Well, this isn't really true. "Icing" is definitely a noun with its own, non-idiomatic meaning, unlike "mocki."
    – Ethan B.
    Commented Jun 30, 2019 at 2:58

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .