(A proofreader's note regarding “credible” and “creditable”)
“Incredible” and “credible” do naturally relate
By virtue of the spellings and their parentage as well.
Approaching them in cousinship is “creditable” bland,
Pretending to be “credible” and hoping there to sell.
Aside from stricter meanings in the area of finance,
It's usually restricted to “praiseworthy” as its kind;
The rarer play of “creditable” as “worthy of belief”
Doth give it yet an image like to “credible” in mind.
This other sense of “creditable” is doubtable for some,
While “credible” a step beyond “believable” will go.
With “good enough for effectiveness” as possible intent,
There's also then “convincing” as a meaning it may show.
Let “creditable” represent "deserving true of praise"
Aside from when one's credit in a business sense is meant.
If “belief” is more the context, think of “credible” to start,
Avoiding the confusion that these words may tend to send.
“His prospects were precarious where he lay upon the ledge,
Matched only by the vista so incredible in view.
He risked his life for photos that might credible be judged
Though 'creditable' was the goal in every effort new.”