1. semiauxiliary - Noun
2. semiauxiliary - Adjective
semiauxiliary (not comparable)
(grammar) Of a verb: functioning rather like an auxiliary verb, but not considered to be a full member of that class.
semiauxiliary (plural semiauxiliaries)
(grammar) A verb that functions rather like an auxiliary verb but is not considered to be a full member of that class.