according to or agreeing with the principles of logic: a logical inference.
reasoning in accordance with the principles of logic, as a person or the mind: logical thinking.
reasonable; to be expected: War was the logical consequence of such threats.
of or relating to logic.

Origin of logical

From the Medieval Latin word logicālis, dating back to 1490–1500. See logic, -al1
Related formslog·i·cal·i·ty [loj-i-kal-i-tee] /ˌlɒdʒ ɪˈkæl ɪ ti/, log·i·cal·ness, nounlog·i·cal·ly, adverbhy·per·log·i·cal, adjectivehy·per·log·i·cal·ly, adverbhy·per·log·i·cal·ness, nounhy·per·log·i·cal·i·ty, nounnon·log·i·cal, adjectivenon·log·i·cal·ly, adverbnon·log·i·cal·ness, nounnon·log·i·cal·i·ty, nouno·ver·log·i·cal, adjectiveo·ver·log·i·cal·ly, adverbo·ver·log·i·cal·ness, nouno·ver·log·i·cal·i·ty, nounpre·log·i·cal, adjectivepre·log·i·cal·ly, adverbqua·si-log·i·cal, adjectivequa·si-log·i·cal·ly, adverbsu·per·log·i·cal, adjectivesu·per·log·i·cal·ly, adverbsu·per·log·i·cal·i·ty, nounun·log·i·cal, adjectiveun·log·i·cal·ly, adverb

Synonyms for logical

1, 3. valid.

Antonyms for logical

1–3. unreasonable.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for quasilogical



relating to, used in, or characteristic of logic
using, according to, or deduced from the principles of logica logical conclusion
capable of or characterized by clear or valid reasoning
reasonable or necessary because of facts, events, etcthe logical candidate
computing of, performed by, used in, or relating to the logic circuits in a computer
Derived Formslogicality or logicalness, nounlogically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for quasilogical



early 15c., "based on reason," from logic + -al (1). Meaning "pertaining to logic" is c.1500. Attested from 1860 as "following as a reasonable consequence." Related: Logically.

Online Etymology Dictionary, © 2010 Douglas Harper