unmischievousadj.
/(ˌ)ʌnˈmɪstʃᵻvəs/, U.S. /ˌənˈmɪstʃᵻvəs/, /ˌənˈmɪʃtʃᵻvəs/, /ˌənˌmɪsˈtʃiviəs/, /ˌənˌmɪʃˈtʃiviəs/ Not mischievous.
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the world > action or operation > safety > [adjective] > safe or not dangerous > safe or harmless
unshathyOE
unbalefulOE
unscathefulc1175
unscathelya1400
unscathing1437
unnoyingc1440
unshendingc1450
unnoyous1483
harmless1533
unharmful1538
unhurtful1549
dintless1558
white1567
offenceless1581
inoffensive1598
unhurting1613
illaesive1628
innocuous1631
unmalignant1633
innoxious1638
inobnoxious1659
unvenomous1659
innocent1662
unafflictinga1711
unmolesting1767
fangless1790
unharming1796
woundless1796
uninjurious1809
uninjuring1820
unmischievous1821
scarless1823
boltless1832
inoffending1853
defanged1920
non-injury1926
anodyne1933
declawed1945
1821 C. Lamb in London Mag. Apr. 385/2 Nothing-plotting, nought-caballing, unmischievous synod!
1848 R. W. Hamilton Disq. Sabbath v. 170 Though overtrading is a solecism, not unmischievous is the unrequired extension of stock.
1913 Locomotive Engineers Jrnl. Mar. 192/2 No one knew why an ordinarily well behaved and unmischievous child should do such a thing.
2006 Sunday Tel. (Nexis) 25 June vii. 30 Isabel Bayrakdarian's Susannah was rather too reticent and unmischievous for my taste.
This entry has been updated (OED Third Edition, December 2014; most recently modified version published online March 2022).
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adj.1821