IPA: /lɪˈsɛnʃəsli/
KK: /lɪˈsɛnʃəsli/
In a way that shows a lack of moral restraint, especially in sexual behavior or indulgence.
The party was filled with people dancing licentiously, ignoring the rules of decorum.
Licentiously → It is formed from "licentia" (from Latin, meaning freedom or liberty) and the suffix "-ous" (meaning full of). The word "licentiously" means full of freedom, often in a way that disregards moral constraints or behaves in an immoral manner.
Think of 'freedom' ('licentia') that can lead to behavior that is 'full of' ('-ous') disregard for rules or morals.