Motif adjectives are listed in this post. Each word below can often be found in front of the noun motif in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing MOTIF.
architectural, basic, binding, central, common, conserved
decorative, dominant, familiar, floral, frequent, important
key, leading, leit, literary, main, major
musical, new, particular, popular, principal, prominent
recurrent, recurring, religious, repeated, same, second
similar, single, structural, traditional, visual
Hope this word list had the adjective used with motif you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.