In general terms, I'm in favour.
'Massima' — MAS-si-ma. Stress on the first syllable. 'Linea di massima' is a fixed expression.
Use to give conditional approval — you're broadly in favour but with implicit reservations about details. Common in professional and political contexts where nuanced positions matter.
'In linea di massima' (in the line of maximum = in broad terms/in general) is a standard Italian phrase for general or conditional agreement. 'Sono favorevole' (I am in favour) is the formal way to express support — more formal than 'sono d'accordo'.
In grandi linee, approvo.
Broadly speaking, I approve.
'In grandi linee' (in broad strokes) — general approval without endorsing every detail
Il principio mi convince, i dettagli vanno discussi.
The principle convinces me, the details need discussing.
Distinguishes principle from implementation — sophisticated position
Sostanzialmente, sono d'accordo.
Substantially, I agree.
'Sostanzialmente' (substantially) — agreement on the substance, not necessarily the form
Italian professional communication has a rich vocabulary for qualified agreement. Saying 'in linea di massima sì' while flagging reservations is standard meeting behaviour — it allows progress while protecting your ability to object to specific details later.