Klingon, on the other hand, was created essentially for the exact opposite reason. It was not meant to facilitate communications, but to entertain. Dr. Okrand started with the premise that since the Klingons were an alien race, their language was unlike any human tongue, least of all English. He deliberately selected difficult and abstruse sounds, not common ones. He created a grammar that resembles none of the commonly known international languages.
Syntax is almost the exact reverse of English.
Esperanto thrives on cognates and prides itself on instant recognition of much of its text. While Esperanto prides itself in its complex array of vowel endings which indicate very clearly the parts of speech or case of the word, Klingon will have none of this. Most Klingon words are no-nonsense one syllable constructs. There is a rule in the Klingon language that no word can begin with a vowel. Dr. Okrand seems to have gone out of his way to create them.