In the paper, we shall examine fuzziness measure of terms in linear and complete hedge algebras of a linguistic variable. A notion of the so‐called semantically quantifying mappings will be redefined more generally and it will be established a closed relationship between fuzziness measure and a class of semantically quantifying mappings defined by a recursive expression with parameters to be fuzziness measure of primary terms and linguistic hedges. An application of fuzziness measure and semantically quantifying mappings in solving fuzzy the multiple conditional reasoning problem will be presented to show an applicability of hedge algebras.