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Showing results for semi. Search instead for semilo.
Definitions

semi-

[sem-ee, sem-ahy] / ˈsɛm i, ˈsɛm aɪ /
ADJECTIVE
quasi
Synonyms
WEAK
apparent apparently fake mock near nominal partly pretended pseudo- seeming seemingly sham so-called supposedly synthetic virtual would-be
Antonyms
WEAK
entire total whole
semi
NOUN
eighteen-wheeler
Synonyms
WEAK
18-wheeler big rig rig semitrailer trailer truck truck trailer
NOUN
truck
Synonyms
STRONGEST
car crate freighter jeep lorry pickup rig van wagon
STRONG
buggy carryall dump wheels
WEAK
eighteen-wheeler four by eight four by four four-wheel drive

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This semi couldn’t have been more David vs.

From The Wall Street Journal • Mar. 19, 2026

This adaptation appears repeatedly in the fossil record among fish eating animals, including aquatic ichthyosaurs, semi aquatic crocodile and flying pterosaurs.

From Science Daily • Feb. 23, 2026

Kodiak AI, a Mountain View-based tech company, is developing autonomous semi trucks it says will improve safety and efficiency on the roads.

From Los Angeles Times • Feb. 2, 2026

Home advantage for the final – which, like the semi, will be played over one leg – will be decided during the same draw.

From BBC • Nov. 19, 2025

In theory, bi attached to the front of a word means “two,” and semi means “half” Although Moose says he’s bilingual, he’s semiliterate.

From "Woe Is I" by Patricia T. O'Conner

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.