Antonyms of noun estrus

1 sense of estrus

Sense 1
estrus, oestrus, heat, rut -- (applies to nonhuman mammals: a state or period of heightened sexual arousal and activity)
       Antonym of anestrus (Sense 1)
      => anestrus, anestrum, anoestrus, anoestrum -- (applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun estrus

1 sense of estrus

Sense 1
estrus, oestrus, heat, rut -- (applies to nonhuman mammals: a state or period of heightened sexual arousal and activity)
       => physical condition, physiological state, physiological condition -- (the condition or state of the body or bodily functions)