The purposeof this study was to reconsider both grammaticality and pragmaticsof interrogative ending in spoken language. We analyzed theintonation of 35 women’s spontaneous speech with a length of300minutes and drew the following conclusions freom the analysis.First, Most endings that realized interrogative sentence in spokenlanguage were found evenly in declarative sentence and interrogativesentence and showed difference only in functions and degree ofmeaning. Second, intonation had lower extent of contribution as thefunctional strength of interrogative sentence was higher. By contrast,intonation had higher extent of contribution as the functional strengthof interrogative sentence was lower. Grammaticality and pragmaticswere inter-complementary. Third, intonation was combined withmorphological elements and involved in pragmatic functions.Non-assertive endings were combined with ‘L:’, ‘LH’, and ‘LHL’ to beused in soft and polite expressions. Confirmative and assertiveendings were combined with ‘H’, ‘HL:’, and ‘LHL’ to be used inassertive expressions. Fourth, As the higher, use of flexibleintonation and forms revealing confidence was more common, andfurthermore, politeness strategy based on prosody elements was usedmore commonly