言い伏せる (いいふせる) Japanese meaning | KotomoraMeanings
1
ichidan verb, transitive verb
argue down; talk down; out-argue
To defeat someone in an argument by speaking more forcefully or persuasively, making them unable to counter.
議論では、感情的にならずに冷静に言い伏せるのが効果的だ。
In a debate, it's effective to calmly talk someone down without getting emotional.