The word "ruttish" refers to a state of being sexually aroused or lustful. Antonyms for the term include "chaste," "pure," "celibate," "modest," "reserved," and "unsexy." A chaste person is someone who abstains from sexual activity, while a pure person is someone who is not interested in such activities. A celibate person voluntarily remains single and abstains from sex. A modest person has a sense of propriety and decency, while a reserved person is not outspoken about their sexual desires. Finally, an unsexy person is not arousing or appealing in a sexual way. These are all antonyms for "ruttish," describing states of being that are the opposite of sexual arousal.