(idiomatic) Far in excess of what is normal or measurable.
2020, Sophie Ranald, Thank You, Next:
Give your head a wobble, Zoë, I told myself. You can't go around being broken-hearted because your heart isn't broken any more. That would be off-the-scale ridiculous.
2021 October 6, Philip Haigh, “Rail freight has a key role in boosting Britain's resilience”, in RAIL, number 941, page 46:
"The people who run domestic intermodal are seeing enquiries flying off the scale in terms of what they can do, so there are some people they can help and some people they can't help.
