Definition of expostulate verb from the Oxford Advanced American Dictionary

 

expostulate

 verb
verb
NAmE//ɪkˈspɑstʃəˌleɪt//
 
[intransitive, transitive](+ speech)(formal)Verb Forms present simple I / you / we / they expostulate
 
he / she / it expostulates
 
past simple expostulated
 
-ing form expostulating
 
 
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to argue, disagree, or protest about something
expostulation
 
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NAmE//ɪkˌspɑstʃəˈleɪʃn//
 
noun [uncountable, countable]
See the Oxford Advanced Learner's Dictionary entry: expostulate