gawky
The photograph shows a back view of him sitting gawkily in his bathing suit.
The host - tall and almost gawkily thin - appeared resistant to the delights of the food spread before him.
He is tall and gawkily handsome, but also prone to violent outbursts.

SMART Vocabulary: related words and phrases

High, tall and deep
abysmal
altitude
ankle-deep
bottomless
deep
dwarf
ectomorph
ectomorphic
higher
lofty
overshadow
rangy
rear
rear above/over something/someone
stand
tallish
tallness
tower
tower above/over someone/something
towering

You can also find related words, phrases, and synonyms in the topics:

Inability and awkwardness