not think much of

Have little regard for, have a low opinion of, as in Bill doesn't think much of the carpentry work in that house. The phrase not much has been used in this sense since the mid-1800s.

Words nearby not think much of

not see beyond one's nose, not suffer fools gladly, not take no for answer, not the half of it, not the only fish in the sea, not think much of, not to be sneezed at, not to mention, not to worry, not touch with a ten-foot pole, not turn a hair