considerate (adj.)youdaoicibaDictYouDict
1570s, "marked by deliberation," from Latin consideratus, past participle of considerare (see consider). Of persons, "deliberate, prudent," 1580s; meaning "showing consideration for others" is from c. 1700. Related: Considerately; considerateness.
inconsiderate (adj.)youdaoicibaDictYouDict
late 15c., "done thoughtlessly," literally "not properly considered," from Latin inconsideratus "headstrong, unadvised, thoughtless," from in- "not, opposite of" (see in- (1)) + consideratus (see consider). Related: Inconsiderately; inconsiderateness.