[friv.ol] vi -oled or -olled ; -ol.ing or -ol.ling [back-formation fr. frivolous] (1866): to act frivolously: trifle -- friv.ol.er or friv.ol.ler n
FRIVOL
Meaning of FRIVOL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012