semi-

Prefix meaning halfway

Semi- means half or partially.

A semicircle is half a circle; a semi-trailer is half a trailer rig.

More often, semi- indicates something partial or incomplete: semi-conscious, semi-retired, semi-formal.

In British English, a semi is a semidetached house—one sharing a wall with its neighbor.

In American English, a semi is a large truck with a detachable trailer.

partial

halfway

At the midpoint

partly · midway · fractional · moderate · intermediate · quasi · pseudo · almost · nearly · incompletely

vehicles

truck

Heavy freight vehicle

tractor-trailer · cab · hauler · freight · diesel · trucker · highway · long-haul · sleeper · jackknife

competitions

final

Last and decisive

tournament · bracket · qualifier · match · elimination · championship · quarterfinal · contender · advance · heat

music

quaver

Unsteady vocal sound

  • noteShort written record
  • breveShort vowel indicator
  • minimSmallest apothecary volume

crotchet · duration · rest · beat · rhythm · notation · tempo · measure · time-signature · musical

architecture

detached

Apart or uninvolved

housing · suburban · terraced · dwelling · neighbor · residential · estate · property · adjoining · development

formal

casual

Relaxed and informal

occasion · event · elegant · smart · business · dress-code · wedding · reception · gala · appropriate

Categories
Opposites
degree of completeness

semi-fully

To the complete extent

completely · wholly · totally · entirely · ultra-

numerical/fractional quantity

semi-bi-

Prefix indicating two

di- · multi- · poly- · hemi- · demi-

binary position

semi-bi-

Prefix indicating two

double · dual · di- · twice · twofold

Phrases
Family

semi, semicircle, semifinal, semicolon, semiotics, semicircular, semifinals, semiconductor, semiotic

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G