Harbor adjectives are listed in this post. Each word below can often be found in front of the noun harbor in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing HARBOR.
ancient, artificial, beautiful, best, better, blue, british, broad, busy, calm, capacious, cold
commercial, commodious, convenient, crowded, deep, deepwater, entire, excellent, fine, finest, fishing, good
great, important, inner, landlocked, large, little, locked, lovely, lower, magnificent, main, narrow
natural, nearby, nearest, new, noble, old, only, open, other, outer, own, peaceful
picturesque, protected, quiet, safe, same, secure, shallow, shaped, sheltered, small, snug, spacious
splendid, tiny, upper, very, water, whole, wide
Hope this word list had the adjective used with harbor you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.