1) Achievable 2) Attainable 3) Doable 4) Executable 5) Imaginable 6) Likely 7) Possible 8) Practicably 9) Practical 10) Viable 11) Workable 1) Doable 2) Executable 3) French word used in English 4) Possible 5) Practicable 6) Practical 7) Realistic 8) Viable 9) Workable 10) Workable or viable 
A point is feasible if it satisfies all constraints. The feasible region (or feasibility region) is the set of all feasible points. A mathematical program is feasible if its feasible region is not empty.
• (a.) Capable of being done, executed, or effected; practicable. • (a.) Fit to be used or tailed, as land.
Fea'si·ble adjective [ French faisable , from faire to make or do, from Latin facere . See Fact , Feat .] 1. Capable of being done, executed, or effected; practicable. « Always existing before their eyes as a thing feasible in practice.»...
[adj] - capable of being done with means at hand and circumstances as they are
executable adjective capable of being done with means at hand and circumstances as they are
[SAT terms] capable of being done with means at hand[SBAC wordlist] capable of being done with means at hand