Synonyms of the word

add-on

• n. Something which can be appended to something else.
• n. (computer hardware, software) A software extension or hardware peripheral that provides additional functions…
• n. (poker) Additional chips that can be purchased at specific times in tournament play.

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…

addition

• n. (uncountable) The act of adding anything.
• n. Anything that is added.
• n. (uncountable) The arithmetic operation of adding.
• n. (music) A dot at the right side of a note as an indication that its sound is to be lengthened one half.
• n. (law) A title annexed to a person's name to identify him or her more precisely, as in "John Doe, Esq.",…
• n. (heraldry) Something added to a coat of arms, as a mark of honour; opposed to abatement.

appurtenance

• n. An appendage added to something else.
• n. (in the plural) Equipment used for some specific task; gear.
• n. The thing to which another pertains.
• n. (law) Minor property (such as an outhouse) that passes with the main property when it is sold.
• n. (grammar) A modifier that is appended or prepended to another word to coin a new word that expresses belonging.

component

• n. A smaller, self-contained part of a larger entity. Often refers to a manufactured object that is part…
• adj. Making up a larger whole; as a component word.
• adj. Made up of smaller complete units in combination; as a component stereo.

constituent

• adj. Being a part, or component of a whole.
• adj. Authorized to make a constitution.
• n. A part, or component of a whole.
• n. The person or thing which constitutes, determines, or constructs.
• n. A resident of a place represented by an elected official.
• n. (law) One who appoints another to act for him as attorney in fact.
• n. (grammar) A functional element of a phrase or clause.

element

• n. One of the simplest or essential parts or principles of which anything consists, or upon which the constitution…
• n. A small part of the whole.
• n. (plural only, with "the") Atmospheric forces such as strong winds and rains.
• n. A place or state of being that an individual or object is better suited towards.
• n. (Christianity, usually in the plural) The bread and wine taken at Holy Communion.
• n. A group of people within a larger group having a particular common characteristic.
• n. A component in electrical equipment, often in the form of a coil, having a high resistance, thereby generating…
• n. (computing) One of the conceptual objects in a markup language, usually represented in text by a matching…

improver

• n. Something that, or someone who, improves something.
• n. (obsolete) Specifically, a person who improves land or property, a landscaper.
• n. One who improves his or her performance, one who shows improvement (of individuals or groups).
• n. A substance added to cause improvement (especially to a foodstuff).

supplement

• n. Something added, especially to make up for a deficiency.
• n. An extension to a document or publication that adds information, corrects errors or brings up to date.
• n. An additional section of a newspaper devoted to a specific subject.
• n. (geometry) An angle that, when added to a given angle, makes 180°; a supplementary angle.
• n. (nutrition, bodybuilding) A vitamin, herbal extract or chemical compound ingested to meet dietary deficiencies…
• v. To provide or make a supplement to something.