The phrase "adorable one" is correct and usable in written English.
It can be used as a term of endearment or affection when referring to someone you find charming or cute.
Example: "Look at that adorable one playing in the park; she has the sweetest smile."
Alternatives: "cute one" or "lovable one".
A few weeks ago, I was searching for a Christmas outfit for my daughter–I found an adorable one on Pinterest but it didn't have a link to where I could buy the item.
The 2-year-old son of Toronto Raptors star Kyle Lowry, Karter, turned a somber postgame press conference into an adorable one on Sunday.
Mr. Miroshnichenko's ballet does have a dog: a little adorable one, very well-behaved on Wednesday.
He's a bit of a goober, on the page an adorable one, deep in heartsickness.
After E4's LGBT anthology Banana featured a transgender character humiliated by her ex, it's refreshing to see a more positive trans-themed story on TV, and an adorable one at that.
"The shells are adorable," one taster said.
When I asked a saleswoman if they had any swimsuits — I remembered some adorable ones on the runway — she said the only ones they had were on the mannequins in the windows.
The pop star emerged from behind double doors to join the women in their performance -- and she and Sister Cristina even had a moment of adorable one-on-one dancing.
Almost exactly one year later, on March 16, 2014, adorable, one-year-old Saranzaya, also with a "hole in her heart," arrived in Austin after a long 10,000-mile, 3-day journey from a small village in the remote mountainous Arkhangai province in Mongolia and immediately stole everyone's heart.
Memuna was spoiled at first: she had figured out that adults cave at demands from an adorable one-armed girl who cries.
A self-consciously adorable one-man band in a toga, he goes out of his way to upstage all the other performers, not to mention the text itself.
