semiweekly

US: /ˌsɛmiˈwikli, ˌsɛmaɪ-/ ,(sem′ē wēk′lē, sem′ī-)

Inflections of 'semiweekly' (n): npl: semiweeklies

WordReference Random House Learner's Dictionary of American English © 2025

sem•i•week•ly /ˌsɛmiˈwikli, ˌsɛmaɪ-/   adj., n., pl. -lies, adv. 
adj. 

1. occurring, done, appearing, or published twice a week.

n. [countable]

2. a semiweekly publication.

adv. 

3. twice a week.

WordReference Random House Unabridged Dictionary of American English © 2025

sem•i•week•ly  (sem′ē wēk′lē, sem′ī-), adj., n., pl. -lies, adv. 
adj. 

1. occurring, done, appearing, or published twice a week:
   semiweekly visits.

n. 

2. a semiweekly publication.

adv. 

3. twice a week:
   He traveled semiweekly to Detroit.

• semi- + weekly 1785–95, American.

Usage

See bi- ¹.