Oasis adjectives are listed in this post. Each word below can often be found in front of the noun oasis in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing OASIS.
beautiful, bright, cool, fertile
great, green, little, lovely
lush, occasional, only, peaceful
pleasant, quiet, small, tiny
tranquil, tropical, urban, veritable
Hope this word list had the adjective used with oasis you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.