Student or Learner
I came across a phrase reading The Crossword Express and was wondering if 'crossword' is OK as the soft is used to make crosswords (plural).
Are there any instances where the adjective can be plural?
Or, you could think of English adjectives as being versatile, encompassing both singular and plural; or even that they have no number at all, per se. I prefer these ideas to the statement that they are singular: "beautiful girls...."