The phrase "immeasurable damage" means harm or destruction that cannot be fully measured or quantified because it is so great, extensive, or severe. Full definition
Despite harsh noises from western leaders about throttling tax havens, he believes they are proliferating as never before — with the complicity of those same leaders — and are causing immeasurable damage to developed and developing nations alike. (canadianbusiness.com)
At the same time, there are concerns a housing bubble could do immeasurable damage to the Canadian economy if it bursts, since homeowners who suddenly find themselves underwater on their mortgages would dial back spending elsewhere. (canadianbusiness.com)
In secondary schools immeasurable damage has been caused to the Church, families and students by the manner in which our Faith is «debated», wastage rates of over ninety per cent of pupils leaving school are quoted. (faith.org.uk)