ultracasual
adjective
ul·tra·ca·su·al ˌəl-trə-ˈkazh-wəl 
-ˈka-zhə-wəl,
-ˈka-zhəl
: extremely or extraordinarily casual
an ultracasual outfit/atmosphere
Word History
First Known Use
1892, in the meaning defined above
ultracasual
adjective
as in free and easy
Synonyms & Similar Words
Relevance
- free and easy
- relaxed
- casual
- familiar
- offhand
- easygoing
- unauthorized
- lax
- unofficial
- loose
- unorthodox
- informal
- unconventional
- heterodox
- irregular
- unceremonious
Antonyms & Near Antonyms
- regular
- conventional
- formal
- routine
- orthodox
- proper
- correct
- ceremonial
- rigid
- ceremonious
- stiff
- restrained
- decorous
- inhibited
- uptight
- constrained
- stuffy