/ ˌɪntəˈdʒekt; NAmE -tərˈdʒ-/ verb
( formal ) to interrupt what sb is saying with your opinion or a remark :
[ v speech ]
'You're wrong,' interjected Susan.
[also vn , v ]
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WORD ORIGIN
late 16th cent.: from Latin interject- interposed, from the verb interjicere , from inter- between + jacere to throw.