Synonyms of the word

adjuvant

• adj. helping; helpful; assisting. [from 16th c.].
• adj. (medicine) Designating a supplementary form of treatment; specifically, a cancer therapy administered…
• n. Someone who helps or facilitates; an assistant, a helper. [from 16th c.].
• n. (medicine) Something that enhances the effectiveness of a medical treatment; a supplementary treatment…
• n. (pharmacology) An additive (as in a drug) that aids or modifies the action of the principal ingredient…
• n. (pesticide science) An additive (often a separate product) that enhances the efficacy of pesticide products,…
• n. (immunology) A substance enhancing the immune response to an antigen. [from 20th c.].

accessory

• adj. Having a secondary, supplementary or subordinate function by accompanying as a subordinate; aiding in…
• adj. (law) Assisting a crime without actually participating in committing the crime itself.
• adj. Present in a minor amount, and not essential.
• n. Something that belongs to part of another main thing; something additional and subordinate, an attachment.
• n. (fashion) An article that completes one's basic outfit, such as a scarf or gloves.
• n. (law) A person who is not present at a crime, but contributes to it as an assistant or instigator.
• n. (art) Something in a work of art without being indispensably necessary, for example solely ornamental…

additive

• adj. (mathematics) Pertaining to addition; that can be, or has been, added.
• adj. (mathematics, of a function, etc.) Distributive over addition.
• adj. (algebra) Having addition as an operator.
• adj. (chemistry) Pertaining to chemical addition.
• adj. (genetics) Describing genes (or the interaction etc. of such genes) which govern the same trait and whose…
• n. A substance added to another substance or product for its ability to alter its properties.
• n. (grammar) A word or phrase that adds something, such as also, even, or nor.

adjunct

• n. An appendage; something attached to something else in a subordinate capacity.
• n. A person associated with another, usually in a subordinate position; a colleague.
• n. (dated, metaphysics) A quality or property of the body or mind, whether natural or acquired, such as colour…
• n. (music) A key or scale closely related to another as principal; a relative or attendant key.
• n. (grammar) A dispensable phrase in a clause or sentence that amplifies its meaning, such as "for a while"…
• n. (syntax, X-bar theory) A constituent which is both the daughter and the sister of an X-bar.
• n. (rhetoric) Symploce.
• n. (category theory) One of a pair of morphisms which relate to each other through a pair of adjoint functors.
• adj. Connected in a subordinate function.
• adj. Added to a faculty or staff in a secondary position.

ancillary

• adj. Subordinate; secondary; auxiliary; accessory.
• n. Something that serves an ancillary function, such as an easel for a painter.
• n. (archaic) An auxiliary.

appurtenant

• adj. Of or pertaining to an appurtenance.
• adj. Ancillary or subsidiary.
• n. An appendage or attachment.
• n. (law) A type of easement benefiting real property that "runs with the land" as opposed to an interest…

auxiliary

• adj. Helping; giving assistance or support.
• adj. Supplementary or subsidiary.
• adj. Held in reserve for exceptional circumstances.
• adj. (nautical) Of a ship, having both sails and an engine.
• adj. (grammar) Relating to an auxiliary verb.
• n. A person or group that acts in an auxiliary manner.
• n. A sailing vessel equipped with an engine.
• n. (grammar) An auxiliary verb.
• n. A marching band colorguard.

helpful

• adj. Furnishing help; giving aid; useful.

subsidiary

• adj. Auxiliary or supplemental.
• adj. Secondary or subordinate.
• adj. Of, or relating to a subsidy.
• n. A company owned by a parent company or a holding company, also called daughter company or sister company.
• n. (music) A subordinate theme.

supportive

• adj. Providing support.