1. overreact/overstate, take sth too seriously, exaggerate
the incident was blown out of proportion
If you 'blow something out of proportion', you have a disproportionate reaction or a reaction that isn't suitable to the issue at hand. This means to exaggerate or to have an extreme emotional reaction or sanction consequences that are not merited: "We have several processes in place for dealing with this issue. I feel we are blowing it out of proportion, as there was only one incident and it was relatively minor."