get a word in edgewise
US /ɡɛt ə wɜrd ɪn ˈɛdʒˌwaɪz/
UK /ɡɛt ə wɜrd ɪn ˈɛdʒˌwaɪz/

1.
口を挟む, 発言する
to be able to say something in a conversation where someone else is talking a lot and not allowing others to speak
:
•
She talks so much that it's impossible to get a word in edgewise.
彼女はとてもよく話すので、口を挟むのは不可能だ。
•
I tried to explain, but he wouldn't let me get a word in edgewise.
説明しようとしたが、彼は私に口を挟むことを許さなかった。