Synonyms of the word

second-string

• adj. belonging to the second string of a team.
• adj. substitute or replacement.
• adj. second most important.

secondary

• adj. Next in order to the first or primary; of second place in origin, rank, etc.
• adj. Originating from a deputy or delegated person or body.
• adj. (organic chemistry) Derived from a parent compound by replacement of two atoms of hydrogen by organic…
• adj. (geology) produced by alteration or deposition subsequent to the formation of the original rocks mass.
• adj. (geology) developed by pressure or other causes.
• adj. (anatomy) Pertaining to the second joint of the wing of a bird.
• adj. (medicine) Dependent or consequent upon another disease, or occurring in the second stage of a disease.
• adj. Of less than primary importance.
• adj. (education) related to secondary education, i.e. schooling between the ages of 11 and 18.
• adj. (manufacturing) relating to the manufacture of goods from raw materials.
• adj. (of a color) Formed by mixing primary colors.
• n. (ornithology) Any flight feather attached to the ulna (forearm) of a bird.
• n. (finance) An act of issuing more stock by an already publicly traded corporation.
• n. (American football, Canadian football) The defensive backs.
• n. (electronics) An inductive coil or loop that is magnetically powered by a primary in a transformer or…
• n. One who occupies a subordinate or auxiliary place; a delegate deputy.
• n. (astronomy) A secondary circle.
• n. (astronomy) A satellite.
• n. Used as an abbreviation to refer to items with names containing secondary.

substitute

• v. (transitive) To use in place of something else, with the same function.
• v. (transitive) In the phrase "substitute X with/by Y", to use Y in place of X; to replace X with Y.
• v. (transitive, sports) To remove (a player) from the field of play and bring on another in his place.
• v. (intransitive) To serve as a replacement (for someone or something).
• n. A replacement or stand-in for something that achieves a similar result or purpose.
• n. (sports) A player who is available to replace another if the need arises, and who may or may not actually…
• n. (historical) One who enlists for military service in the place of a conscript.