midweek noun 2adjective 1adverb 1forms 1 noun2 •The middle of the week. •(informal) Midweek worship service, held by many congregations and in addition to a Sunday morning service.This Wednesday is churchwide midweek; men's is the next one. adjective1 •That happens in the middle of the week.Cheap mid-week return tickets were reintroduced by British Railways on May 7, to encourage holiday travel during the week rather than at weekends. — 1957 adverb1 •In the middle of the week.Leicester could only manage a goalless draw midweek with Sutton Coldfield and will be keen to return to winning form. — 1989 formsmidweeks