Words that have identical vowel-based rhyme sounds in the tonic syllable. Moreover, that tonic syllable must start with a different consonantal sound.
There are no pure rhymes for "pacifists".
Words that have a pure rhyme on their last syllable only.
bassists
    racists
      receptionists
        receptionists
          impressionists
            secessionists

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              Words that "almost" rhyme on the vowel-based rhyme sound of the stressed syllable like: be/eat or maybe/shapely.
              nationalists
                internationalists
                  internationalists
                    evangelists
                      evangelists
                        analyst's
                          analysts
                            panelists

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                              Rhymes made up of more than one word. For instance, "jealous" and "tell us" or "shaky" and "make me."
                              There are no mosaic rhymes for "pacifists".