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considerable

[kuh n-sid-er-uh-buh l]
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adjective
  1. rather large or great in size, distance, extent, etc.: It cost a considerable amount. We took a considerable length of time to decide.
  2. worthy of respect, attention, etc.; important; distinguished: a considerable person.
noun
  1. Informal. much; not a little: He has done considerable for the community.
adverb
  1. Nonstandard: Older Use. considerably; noticeably; much: I'm feeling considerable better now.

Origin of considerable

1400–50; late Middle English < Medieval Latin consīderābilis, equivalent to consīderā- (see consider) + -bilis -ble
Related formsun·con·sid·er·a·ble, adjectiveun·con·sid·er·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for un-considerable

considerable

adjective
  1. large enough to reckon witha considerable quantity
  2. a lot of; muchhe had considerable courage
  3. worthy of respecta considerable man in the scientific world
Derived Formsconsiderably, 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 un-considerable

considerable

adj.

mid-15c., "capable of being considered," from Medieval Latin considerabilis "worthy to be considered," from Latin considerare (see consider). Meaning "pretty large" is from 1640s (implied in considerably).

CONSIDERABLE. This word is still frequently used in the manner out by Dr. Witherspoon in the following remark: "He is considerable of a surveyor; considerable of it may found in the country. This manner of speaking in the northern parts." [Pickering, 1816]
Online Etymology Dictionary, © 2010 Douglas Harper