light-hearted (adjective) airy: buoyant, light, or lively in nature
Sinonime: advised, aforethought, contemplated, designed, designful,
examined,
express, given due consideration, gone into, intentional, investigated, mediated, premeditated, prepense,
studied,
studious, thought-about, thought-through, treated,
voluntary, weighed, well advised, well chosen, willful
Antonime: disregarded,
forgotten,
neglected,
unplanned, unstudied