"His uncle is tall!"
Translation:Lōʻihi kona ʻanakala!
Auē! Although Pukui's dictionary does define "tall" as "loloa (as a person)," in the same entry a few lines later it says: "Tall person, kanaka lōʻihi."
In traditional Hawaiian writings (like from the mid 1800s), "kanaka loloa" does appear occasionally (as does "kanaka loa"), but even then "kanaka lōʻihi" was apparently more common.
Personally, I've never heard anyone describe a tall person as "loloa," not even native speakers of Hawaiian. So, if you plan to speak with anyone in Hawaiian today, I would recommend sticking with "lōʻihi" to describe a tall person.