The spelling of "lankinesses" can be quite confusing, as it contains a number of silent letters. The word is pronounced /læŋˈkinəsɪz/. The "k" in "lank" is silent, as is the "e" in "nesses". The "a" in "nesses" is pronounced "uh". The word refers to the state of being lanky or tall and thin, and is often used to describe a person or object. Despite its tricky spelling, "lankinesses" is a common enough word that it is recognized by many spell-check programs.
The word "lankinesses" does not have an established etymology as it is not listed in dictionaries or widely recognized. It seems to be a formed noun derived from the adjective "lanky", which describes someone or something tall, thin, and ungainly. The addition of the "-nesses" suffix creates a plural noun form, possibly used to refer to multiple instances or qualities of lankiness. However, it is worth noting that this particular word is not commonly used and may be considered non-standard English.