slightly sour or acidic, not strongly so, often describing a mild tanginess
kwaskowaty
extremely self-assertive in a way that annoys others
zarozumiały
characterized by high quality, elegance, and extravagance
luksusowy
talking a great deal, particularly about trivial things
gadatliwy
extremely evil or wicked, typically involving illegal or immoral actions
nikczemny
honorably retired from assigned duties and retaining your title along with the additional title `emeritus' as in `professor emeritus'
emerytowany
unpleasantly and excessively suave or ingratiating in manner or speech
obłudny
(of animals and plants) found and developed only in a particular place and not been brought from elsewhere
rdzenny
done or happening naturally, without any prior thought or planning
spontaniczny
characterized by noisy and energetic behavior, often lacking discipline
porywisty