a. [f. as prec. + -LESS.] Devoid of flexion or flexions: only in grammatical sense.
1860. Farrar, Orig. Lang., viii. 182. The Chinese then may be considered as a language petrified in its first stage of flexionless and ungrammatical monosyllabism.
1874. R. Morris, Hist. Eng. Gram., ii. § ii. ¶ 22. The dialects of the North and North-East of England in the twelfth and thirteenth centuries are almost as flexionless as modern English.