One word substitution: a speech made without preparation.

  • A. eloquent
  • B. extempore
  • C. verbose
  • D. monologue

Explanation

An extempore or impromptu speech is delivered on the spur of the moment with no rehearsal. Eloquent describes how well something is said rather than whether it was prepared, and verbose means using too many words. A monologue is a long speech by one person, prepared or not.

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