What does the word subjunctive mean?

Usage examples for subjunctive

  1. " If it should rain cats and dogs,"- is a phrase which is in many mouths; but probably no one has heard it transferred from the subjunctive to the indicative mood. – The Romance of Natural History, Second Series by Philip Henry Gosse
  2. The learned Doctor's subjunctive mood, in the second person singular, is this: Present time. – The Grammar of English Grammars by Goold Brown
  3. We may notice, too, that the relative pronoun, unlike the rest, is necessarily syncategorematic, for the same reason as the subjunctive mood. – Deductive Logic by St. George Stock
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