dare il diapason

dàre il diapason (first-person singular present (with syntactic gemination after the verb) dò il diapason, first-person singular past historic dièdi il diapason or diédi il diapason or détti il diapason or (traditional) dètti il diapason, past participle dàto il diapason, first-person singular future darò il diapason, first-person singular subjunctive dìa il diapason, first-person singular imperfect subjunctive déssi il diapason, second-person singular imperative dài il diapason or dà' il diapason, auxiliary avére)

1. (idiomatic) to set the tone (of a conversation, discussion, etc.)