yumptious
adj.— «This scholarly, no-frills econiche for neologisms makes yumptious reading from here to Bosnywash.» —“On Language: Living In Synonymy” by William Safire New York Times Magazine Sept. 21, 1980. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...