A stock phrase in Japanese pop culture supposedly used by the wife in a newly-wed couple to invite her new husband to bed.

Kyūjitai form of 私生児 (“illegitimate child”)

新婚旅行: honeymoon

contrabass; double bass; bass (musical instrument)

contest, competition

a condom (flexible sleeve worn on the penis)

basis, foundation

be crowded / be complicated / go into, go in / put into / become some state completely / do thoroughly / remain in the same state, such as remain sitting or remain silent

air conditioner

communication: the conveying of information between two or more entities