When I looked for "kibosh" in WorldWideWords, Quinion used a word that to me doesn't seem up to his presumed standards.
In discussing questions he gets about dubious coinages:
"Such enquiries are particularly smilesomered because I find several hundred words a month about which I could ask the same question in the dozens of newspapers and periodicals that I read for Oxford Dictionaries"
I think a word worker such as Quinion should have been able to choose something better. "Risible"? Please let's hear some suggestions or comments.
Somehow reminds me of old vice-versa about the girl who
and supper was fair and buxome, and at bedtime was.......
Is that "smilesome"?

Dear Bill:
Are you asking for a word that means slightly humorous, such as to merely cause one to smile?

Like amusing, maybe?