Liars adjectives are listed in this post. Each word below can often be found in front of the noun liars in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing LIARS.
best, biggest
good, great
greatest, habitual
many, notorious
other, pathological
such
Hope this word list had the adjective used with liars you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.
consummate
glib
egregious
chronic
incorrigible
congenital
compulsive