逆

Buddhism

five cardinal sins (killing one's father, killing one's mother, killing an arhat, shedding the blood of a Buddha, causing a schism within the sangha)

Historical term

crime of killing one's master, father, grandfather, mother, or grandmother

choppy seas; head sea

inn

inverse ratio

reverse transcription

counterpropaganda

hangnail

upside-down crucifixion

taking food with one's chopsticks upside down (a breach of etiquette)

bad luck; reverse of fortune

Buddhism

holding a memorial service for oneself

an older person conducting a memorial service for a deceased, younger person

rebellion

Historical term

crime of killing one's master or parent (Edo period)

Buddhism

very grave sin

shaving against the grain; shaving upwards

(discount rate) negative spread; loss margin; back spread; downturn

orca; killer whale

Mathematics

inverse element

levirate marriage; sororate marriage; marriage to deceased sibling's spouse

backfire (of a spell, curse, etc.)

Mathematics

inverse function

Sumo

backward-twisting overarm throw

Buddhism

five cardinal sins (killing one's father, killing one's mother, killing an arhat, shedding the blood of a Buddha, causing a schism within the sangha)

turned-in eyelashes; ingrown eyelashes; trichiasis

upside-down catfish (Synodontis nigriventris)