adj.
VERBS
▪ be , prove , seem
▪
None of the projects proved financially ~.
▪ become
▪ remain
▪ make sth
▪
It is only their investment that makes the project economically ~.
▪ consider sth , regard sth as
ADVERB
▪ extremely ( esp. AmE ), truly
▪ perfectly
▪
a perfectly ~ form of political organization
▪ potentially
▪ still
▪ no longer
▪ commercially , economically , financially , politically
Viable is used with these nouns: ↑ alternative , ↑ business , ↑ candidate , ↑ future , ↑ option , ↑ proposition , ↑ solution , ↑ strategy , ↑ system