Uncountable Nouns That Start with EXT and End with ON

Explore 32 verified English uncountable nouns starting with EXT and ending with ON, including Extension, Extinction, Extraction, Extradition, Extortion, Extermination and Extrapolation. 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.