From Longman Dictionary of Contemporary Englishinterminablein‧ter‧mi‧na‧ble /ɪnˈtɜːmənəbəl $ -ɜːr-/ adjectiveBORINGvery long and boringSYN endlessinterminable delays► see thesaurus at long —interminably adverban interminably long speechExamples from the Corpusinterminable• The ride back to the city seemed interminable.• What's the reason for all these interminabledelays?• We watched an interminabledocumentary on riceproduction.• He launched into an interminablemonologue about his last therapysession.• She wasn't looking forward to the interminablewinter nights, alone in the cabin.Origininterminable(1300-1400)Late Latininterminabilis, from Latinterminare; → TERMINATE