Uncountable Nouns That Start with O and End with TY

Explore 83 verified English uncountable nouns starting with O and ending with TY, including Opportunity, Obesity, Originality, Objectivity, Obscurity, Opacity and Obscenity. Sort these mass nouns and non-count terms for substances and concepts by word length for quantifier accuracy, academic writing, and ESL study below, or check quantifier and measurement rules in our noun grammar guide.