It is often necessary to create adjectives from other types of words, and this is done by using SUFFIXES.
The most common suffixes for this work are as follows:
AL - accidental, regional, personal, brutal.
ARY - cautionary, dietary, complimentary.
FUL - beautiful, skillful, successful, wonderful.
IC - athletic, basic, scientific, historic.
ICAL - magical, practical, logical.
ISH - foolish, childish, selfish.
LESS - useless, worthless, homeless.
LIKE - lifelike, childlike, ladylike.
LY - friendly, costly, cowardly.
OUS - poisonous, nervous, dangerous.
Y - funny, dirty, messy.