Synonyms of the word

functional

• adj. In good working order.
• adj. Useful; serving a purpose, fulfilling a function.
• adj. Only for functional purposes, notably in architecture.
• adj. (computing theory) Having semantics defined purely in terms of mathematical functions, without side-effects.
• adj. (medicine) Of a disease, such that its symptoms cannot be referred to any appreciable lesion or change…
• n. (mathematics) A function that takes a function as its argument; More precisely: A function y=f(x) whose…
• n. (mathematics, functional analysis) A scalar-valued linear function on a vector space.
• n. (computing) An object encapsulating a function pointer (or equivalent).

functioning

• v. present participle of function.
• adj. Functional, working.
• adj. (euphemistic, of a person) Mentally disabled but still able to survive in wider society.
• n. Action of the verb function.
• n. Manner by which something functions; the workings.

operable

• adj. Able to be operated or used.
• adj. Able to be put into operation; practicable.
• adj. Able to be treated by surgery.

operational

• adj. Of or relating to operations, especially military operations.
• adj. Functioning and ready for use.
• adj. Effective or operative.
• adj. Determined by means of practical measures.

operative

• adj. Effectual or important.
• adj. Functional, in working order.
• adj. Having the power of acting; hence, exerting force, physical or moral; active in the production of effects.
• adj. Producing the appropriate or designed effect; efficacious.
• adj. Based upon, or consisting of, a surgical operation or operations.
• n. An employee or other worker with some particular function or skill.
• n. A spy, secret agent, or detective.
• n. A participant in an operation.

practical

• n. (Britain) A part of an exam or series of exams in which the candidate has to demonstrate their practical…
• adj. Based on practice or action rather than theory or hypothesis.
• adj. Being likely to be effective and applicable to a real situation; able to be put to use.
• adj. Of a person, having skills or knowledge that are practical.

running

• adj. Moving or advancing by running.
• adj. successive; one following the other without break or intervention.
• adj. Flowing; easy; cursive.
• adj. Continuous; keeping along step by step.
• adj. (botany) Extending by a slender climbing or trailing stem.
• adj. (medicine) Discharging pus.
• adj. (of a nose) Discharging snot or mucus.
• adv. (informal) consecutively; in a row.
• n. The action of the verb to run.
• n. The activity of running as a form of exercise, as a sport, or for any other reason.
• n. That which runs or flows; the quantity of a liquid which flows in a certain time or during a certain operation.
• n. The discharge from an ulcer or other sore.
• v. present participle of run.

serviceable

• adj. Easy to service.
• adj. Repairable instead of disposable.
• adj. In condition for use.

structural

• adj. Of, relating to, or having structure.
• adj. Used in building.
• n. A component used in construction.

usable

• adj. capable of being used.

useable

• adj. Alternative spelling of usable.

useful

• adj. Having a practical or beneficial use.

usefulness

• n. The quality or degree of being useful.

utilitarian

• adj. of or relating to utility.
• adj. practical and functional, not just for show.
• n. Someone who practices or advocates utilitarianism.

utility

• n. The state or condition of being useful; usefulness.
• n. Something that is useful.
• n. (economics) The ability of a commodity to satisfy needs or wants; the satisfaction experienced by the…
• n. (philosophy) Well-being, satisfaction, pleasure, or happiness.
• n. (business, finance) A service provider, such as an electric company or water company; or, the securities…
• n. (computing) A software program designed to perform a single task or a small range of tasks, often to help…
• n. (sports) The ability to play multiple positions.
• adj. Having to do with, or owned by, a service provider.
• adj. Designating of a room in a house or building where mechanical equipment is installed; such as a furnace,…

working

• n. (usually in the plural) Operation; action.
• n. Method of operation.
• n. Fermentation.
• n. (of bodies of water) Becoming full of a vegetable substance.
• v. present participle of work.
• adj. That is or are functioning.
• adj. That suffices but requires additional work.
• adj. In paid employment.
• adj. Of or relating to employment.
• adj. Enough to allow one to use something.