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 none pure rhymes for "manager".
Words that have a pure rhyme on their last syllable only.
edger
    hedger
      ledger
        leger
          pledger
            avenger
              Stenger
                canister
                  Bannister

                    "Go Pro" to see the next 572 end rhyme sets.

                    Click here to "Go Pro"

                    Words that "almost" rhyme on the vowel-based rhyme sound of the stressed syllable like: be/eat or maybe/shapely. (Click for more info)
                    canister
                      Bannister
                        candler
                          handler
                            annular
                              granular

                                "Go Pro" to see the next 68 near rhyme sets.

                                Click here to "Go Pro"

                                Rhymes made up of more than one word. For instance, "jealous" and "tell us" or "shaky" and "make me."
                                Words that rhyme on the vowel-based rhyme sound of the last syllable only (for instance: “maybe” and “eat”). Near End Rhymes generally (but not always!) suck. Nonetheless, we provide them for you just in case you may find something useful.
                                eastern
                                  northeastern
                                    southeastern
                                      Mideastern
                                        Hilborn
                                          Kilbourne
                                            Milburn
                                              Millburn
                                                Wilburn
                                                  Sherborne
                                                    Sherburn
                                                      Sherburne

                                                        "Go Pro" to see the next 705 near end rhyme sets.

                                                        Click here to "Go Pro"