形容詞 viable:

1. capable of being done with means at hand and circumstances as they are
   同義詞：feasible, executable, practicable, workable
2. capable of life or normal growth and development

vi.a.ble

adj.（形容詞）
Capable of living, developing, or germinating under favorable conditions.
能居的：在良好的狀態(tài)下能夠存活、發(fā)展或發(fā)芽的
Capable of living outside the uterus. Used of a fetus or newborn.
能生存的：在子宮外能存活的。用于胎兒或者新生兒
Capable of success or continuing effectiveness; practicable:
可行的：可望成功的或有持續(xù)效果的；切實(shí)可行的：
例句：
a viable plan; a viable national economy.See Synonyms at possible
可行的計(jì)劃；可望成功的國(guó)家經(jīng)濟(jì)參見(jiàn) possible

來(lái)源：
French
法語(yǔ)
from vie [life]
源自 vie [生命]
from Old French
源自 古法語(yǔ)
from Latin vota * see g wei-
源自 拉丁語(yǔ) vota *參見(jiàn) g wei-

【引伸】
vi.abil.ity
n.（名詞）
vi.ably
adv.（副詞）