Pronunciation change

Noun change

Singular
pioneer

Plural
pioneers

  1. (countable) A pioneer is a person who is the first to go somewhere.
  2. (countable) A pioneer is a person who is among the earliest in any field of progress.

Verb change

Plain form
pioneer

Third-person singular
pioneers

Past tense
pioneered

Past participle
pioneered

Present participle
pioneering

  1. (transitive) If something pioneers something, they explore it or act as a pioneer.