Synonyms of the word

sexless

• adj. Without sexual activity.
• adj. Without physical or behavioral sexual distinction.

asexual

• adj. Not sexual in nature, not marked by sexual activity. (Compare Platonic.).
• adj. Not experiencing sexual attraction; lacking interest in or desire for sex.
• adj. (biology) Having no distinct sex, having no sexual organs.
• adj. (biology) Without sexual action; reproducing by some other method than sex.
• n. (biology) A species which reproduces by asexual rather than sexual reproduction, or a member of such a…
• n. A person who does not experience sexual attraction; a person who lacks interest in or desire for sex.

neuter

• adj. (archaic) Neither the one thing nor the other; on neither side; impartial; neutral.
• adj. (grammar) Having a form which is not masculine nor feminine; or having a form which is not of common gender.
• adj. (grammar) Intransitive.
• adj. (biology) Sexless: having no or imperfectly developed sex organs.
• n. (biology) An organism, either vegetable or animal, which at its maturity has no generative organs, or…
• n. A person who takes no part in a contest; someone remaining neutral.
• n. (grammar) The neuter gender.
• n. (grammar) A noun of the neuter gender; any one of those words which have the terminations usually found…
• n. (grammar) An intransitive verb or state-of-being verb.
• v. To remove sex organs from an animal to prevent it from having offspring; to castrate or spay, particularly…
• v. To rid of sexuality.

nonsexual

• adj. Not sexual.

unsexy

• adj. Not sexy.
• adj. (of research etc) Perceived as not having wide contemporary interest; plodding.