9 Grammatical Pitfalls


[luh-bawr-ee-uh s, -bohr-] /ləˈbɔr i əs, -ˈboʊr-/
requiring much work, exertion, or perseverance:
a laborious undertaking.
characterized by or requiring extreme care and much attention to detail:
laborious research.
characterized by or exhibiting excessive effort, dullness, and lack of spontaneity; labored:
a strained, laborious plot.
given to or diligent in work:
a careful, laborious craftsman.
Origin of laborious
1350-1400; Middle English < Latin labōriōsus. See labor, -ious
Related forms
laboriously, adverb
laboriousness, noun
quasi-laborious, adjective
quasi-laboriously, adverb
superlaborious, adjective
superlaboriously, adverb
superlaboriousness, noun
unlaborious, adjective
unlaboriously, adverb
unlaboriousness, noun
1. toilsome, arduous, onerous, burdensome, difficult, hard, tiresome, wearisome, fatiguing. 4. hardworking, industrious, assiduous, sedulous, painstaking. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for laboriously
  • And the orchestra can keep those pages forever, preserving the instructions that librarians laboriously pencil into scores.
  • Instead of laboriously punching out chads, voters simply touched a screen.
  • In practice it becomes another contract that must be laboriously negotiated.
  • The fingers get rusty, the dividends are more laboriously achieved, the memory is shakier.
  • He is a worse than indifferent public speaker: hunched over, reading laboriously from a text.
  • He would slowly and laboriously puzzle out words, letter by letter.
  • But a world that has laboriously to be constructed through footnotes, is likely to intrigue its creator alone.
  • Salt was obtained by laboriously boiling sea water in five large kettles.
  • Previously, to get a closer look, researchers had to spend weeks laboriously isolating cell wall parts.
  • The warriors and hunters were armed with knives, arrowheads, spear points and tomahawks laboriously fashioned from rocks.
British Dictionary definitions for laboriously


involving great exertion or long effort
given to working hard
(of literary style, etc) not fluent
Derived Forms
laboriously, adverb
laboriousness, noun
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
Cite This Source
Word Origin and History for laboriously

early 15c., "with difficulty, laboriously, slowly," from laborious + -ly (2). Meaning "earnestly, strongly" is from c.1500.



late 14c., "hard-working, industrious," from Old French laborios "arduous, wearisome; hard-working" (12c., Modern French laborieux), from Latin laboriosus "toilsome, wearisome, troublesome," from labor (see labor (n.)). Meaning "costing much labor, burdensome" is from early 15c.; meaning "resulting from hard work" is mid-15c. Related: Laboriousness.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for laborious

Many English speakers likely know this word

Word Value for laboriously

Scrabble Words With Friends

Quotes with laboriously