Practicable and Constructive

adjective

• Usable for a specific purpose.
  • usage: "an operable plan"; "a practicable solution"
  • synonyms: operable
• Capable of being done with means at hand and circumstances as they are.
  • synonyms: feasible, executable, viable, workable

• (a.) That may be practiced or performed; capable of being done or accomplished with available means or resources; feasible; as, a practicable method; a practicable aim; a practicable good.
• (a.) Capable of being used; passable; as, a practicable weapon; a practicable road.

adjective

• Constructing or tending to construct or improve or promote development.
  • usage: "constructive criticism"; "a constructive attitude"; "a constructive philosophy"; "constructive permission"
• Emphasizing what is laudable or hopeful or to the good.
  • usage: "constructive criticism"

• (a.) Having ability to construct or form; employed in construction; as, to exhibit constructive power.
• (a.) Derived from or depending on, construction or interpretation; not directly expressed, but inferred.