a. colloq. [f. LARK sb.2 + -ISH.] Of the nature of a lark; frolicsome.
1882. Echo, 29 Aug., 1/5. Foote lost his leg owing to amputation caused by a larkish exploit with the Duke of York.
Hence Larkishness.
a. 1893. Sir A. Blackwood, Records Life (1896), 14. One other exploit was the result of Wests and my larkishness that half.