I happened to find the paperback book titled Adorkable, by Sarra Manning, on the GoodReads site.
There is no entry for adorkable in the Cambridge, Oxford or Merriam-Webster dictionaries, or in GoogleNgram, which often carries words and phrases that dictionaries don’t.
A Japanese online English-Japanese dictionary happens to register this word with the definition as an adjective combining adorable and dork and meaning “野暮 (yabo – "unrefined") but かわい（kawai -"adorable").
From this, I wonder if “adorkable” is similar to a Japanese word recently getting international currency: Kawai, meaning "unrefined (childish) but lovely." Its implication is positive and affirmative, but Kawai is used most often in conversation among young females and high teens.
What exactly does adorkable mean? To what kind of objects or occasions is adorkable applied?
Is this an adult word, as against a youngsters’ word like Kawai?
Sara Manning is a British woman; so is this a just a recent British English neologism, whose life may be ephemeral?
For instance, what kind of characters – person, animal, item, or whatever object can be called "adorkable"?
Best Answer
Adorkable is a fairly recent (on my scale of years) coinage which, like your Kawai appears to be most current among adolescent girls. It is exactly the sort of term which won't show up in dictionaries until it has evaporated.
Your best source for words of this sort is Urban Dictionary, a user-created dictionary of contemporary slang. It's very spotty in quality and often egregiously offensive, because most of its contributors are teenagers; but it's a model for the value of crowd-sourcing in matters on which its particular crowd is the ultimate authority. UD in fact has 9 pages on this word.
You will see there that it is a portmanteau word which combines, as you suspected, adorable and dorky.
Adorable in colloquial usage no longer means "worthy of adoration or worship* but exceedingly cute—very like what I understand Kawai to mean.
Dork is a little problematic—you may consult UD itself for its range of meanings—but all its senses seem to include a combination of intelligence, eccentricity, and social ineptness.
It appears to be applied mostly to young men by young women, and occasionally to young women by young men. Men of our years should probably avoid using the word adorkable at all.