madcapperyn.
/ˈmadkapəri/, U.S. /ˈmædˌkæpəri/ rare.
The behaviour of a madcap; impulsive or reckless conduct.
ΘΚΠ
the world > action or operation > manner of action > carelessness > incautiousness > [noun] > rashness or recklessness
recklessnessOE
resec1275
outragea1387
rechelesshipc1390
wantonnessc1390
hastivessa1393
recklesslaika1400
racklenessc1405
recklessheadc1410
headiness1447
temerity?a1475
lavishness1477
hastivitya1500
rashnessa1500
Ate1587
temerousness1598
temeritude1623
wretchlessness1625
hare-brainedness1656
rantum-scantum1695
temerariousness1711
blindness1796
devil-may-carishness1829
devil-may-careness1834
devil-may-care1836
rattle-brain1838
devil-may-careism1841
bullheadedness1858
harum-scarumness1863
madcappery1905
1905 D. B. W. Sladen Playing the Game xii. 139 I wondered what madcapery Rich had been up to.
1966 Punch 20 Apr. 586/2 Seeing the two plays in such quick succession..does provide an opportunity to follow in one long sweep the two stages of Prince Hal's progress from madcappery to maturity.
This entry has been updated (OED Third Edition, March 2000; most recently modified version published online March 2022).
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n.1905