strike in
verb
Definitions
To enter suddenly or with force.
To enter or add to a conversation; to say (something) by way of interruption or addition to a conversation.
Synonyms:break ininterposeTo take action; to become involved in a situation, so as to alter or prevent an action.
Synonyms:intervenestep inTo ally oneself (with someone), to take (someone's) side.
Synonyms:joinside