The word "ghostlike" is correct and usable in written English.
It is an adjective used to describe something that is similar to a ghost in terms of appearance, feeling, or behaviour. For example, "The deserted street had a ghostlike quality to it."
Among the stiff stacks of unburied corpses and the ghostlike, disbelieving living, he had been able only to think how lucky he was.
The 83-year-old L.K. Advani, who led the party in the 2009 election, also lingers, ghostlike, hoping for another pop at being prime minister.
That version of Ghost Rider was 19th-century teacher Carter Slade, who disguised himself in a ghostlike phosphorescent costume when he fought lawbreakers.
Late one night as Ichabod Crane rides home from a party at Katrina's home, he is suddenly frightened by a ghostlike headless horseman.
Monumental and ghostlike, the wandjina figures are depicted without mouths, and the enlarged face is always painted white.
She found it open and the judge standing inside, ghostlike in his long white nightshirt.
As we work and shop and eat, they stand ghostlike, by your side.
The color, a grayish white, had the strange effect of shrouding catastrophic destruction in a unified and ghostlike serenity — something new (to me, anyway) in the art of sculpture.
The face becomes fixed and "expressionless," "masklike," "ghostlike" (in the words of doctors who have seen it), with wide, deadened, "sunken" eyes.
And the more "the calamity [in Hausner's words] of the Jewish people in this generation" unfolded, and the more grandiose Hausner's rhetoric became, the paler and more ghostlike became the figure in the glass booth, and no finger-wagging ("And there sits the monster responsible for all this") could summon him back to life.
