unmarried

joined in matrimony

婚姻関係にある

of someone whose marriage has been legally dissolved

結婚が法的に解消された人

single because of death of the spouse

配偶者の死によって独身である

of someone who has no marriage partner

結婚相手がいない人のこと

of someone who has not been married

結婚していない人の

not mated sexually

交尾していない