Why is it easy to learn? It is an agglutinative language. After you learn a list of 10 prefixes and 31 suffixes, every time you learn a new root word, you know how to express roughly 40 different versions or modifications of its meaning, plus combinations with other root words. It's like a "buy one get 40 free" deal on every vocabulary word. If you learn the root for "horse" you can immediately say "stable" "horse meat" "horse herd" "pony" "filly" "stallion", etc. Learn the verb "to read" and you know right away how to say "bookworm" "worth reading" "must-read" "legible" "illegible", etc.

Just being completely regular with no exceptions and having a consistent grammar it is easier than most of ethnic languages. In addition all the roots are from many European languages (including latin and greek) so it is quite possible that many people is already familiar with a big part of the vocabulary. It is a proven fact that Esperanto it is also easy to learn for Asian people, more than ethnical western languages such as English.

The clever use of morphemes means it's easy to multiply your word knowledge from a single root form because all the endings are regular. You can't do that in English. For language learners, Esperanto makes the right choice as it gives you the tools to learn languages quickly. One TED talk compares it to a recorder versus a bassoon. One is easier than the other, teaches you about music and allows you to get on playing. If the goal is to connect the world and not get stuck in localized nuances, Esperanto is the best choice. I'm on the Duolingo Beta class and it's just so much fun. I don't remember having so much fun with languages!

As an English teacher in an international setting and a speaker & teacher of Esperanto, I can state unequivocally that Esperanto is easier for others to learn, be they European or Asian. A phonetic language has an advantage in reading, speaking, and writing. A logical grammar is also easier to explain (fewer exceptions to learn). English has its uses, but it is harder to achieve mastery in it and takes many years more.

Esperanto spelling is completely phonetic, whereas English spelling is... well... not as phonetic. Once you have passed the first hurdle of pronunciation, you can use what you know and make words that have never been made before. Verb conjugation is easy, noun case is easy to learn, and the words are easy to learn. It took me a few weeks to learn Esperanto almost completely, but I still make some mistakes in English to this day.

People, in fact, studying English even for many years, can not communicate relaxed as when you study Esperanto for a few months. It is a language without irregularities, with concise grammar, summarizable in 16 rules without exceptions. What can be easier than a language like that? It is a language that was designed to be easy and accessible to anyone, and so it is in reality.

Esperanto has got a regular grammar and its vocabulary is mainly derived from roots, suffixes and prefixes. This makes it easier to learn than other languages. Apart from English I have learnt Danish, French and Esperanto. Many years ago I also studied Italian, Latin and Seerbian. By personal experience, yes, definitely yes, Esperanto has been the easiest to learn.

I am a professional linguist and translator: It is in several objective tests with thousands of people scientifically proved that learning Esperanto takes about 10 times less time than learning any other language. This is not a question of opinion but this is just a clear and proved scientific fact!

The best question about any language are: it is the easiest for who? Esperanto is the easiest for everyone, regardless of their mother tongue. Besides, learning Esperanto facilitates the learning of languages. That's why we say that Esperanto is introductory speech.

It is in fact remarkable, for the current times, that Esperanto is a neutral language. This means that it can not take the weight of the ravages of its speakers. For example, "esperantoland" never attacked another country because "esperantoland" does not exist.

Note: my comment in English was translated from Esperanto to English by Google translator.

So darn regular and not so many idiom traps. But the best part is that the vocabulary is really flexible - if you know a base set of words, you can practically make others up on the fly if you really need to, and doing so tends to sound WAY less incorrect than many other languages!

The grammar of Esperanto only has a few rules and a ingenious system of combining words to form new ones. This is by far the easiest language I have studied and progress is made extremely fast. Other than my native Swedish, I have also learned German, English and Russian.

Well, it is no only relatively easier and faster to get a good proficiency level in Esperanto than in any other existing language, but most importantly, it is real fun to share this initiative for global language citizenship with people from all over the world!

I find Esperanto easier than English and I'm a native English speaker. The regularity and predictability is a joy. The only difficulty is learning more words and that applies to all languages.

I've been adoring English for 10 years when I reached the same comfort after 1 year of Esperanto. I still love English but Esperanto changed my life.

I learned it in three months and have met people who learned it even quicker. The quickest way to learn it, is to visit one of the many esperanto festivals and congresses all over the world.

I know people who learned to start speaking esperanto in a 10h course. People who in 10 days learned esperanto. I, being multilingual, took an 80h course and started to speak and could read books..

It is the easiest language I have learnt till now. I guess it is the only language you can read with only the basic grammar and a dictionary.

Esperanto works! I've used it in about fifteen countries over recent years. I recommend it to any traveler, as a way of making friendly local contacts.

It's 100% regular, and the words come from languages that you may already know something about if you've ever gone to school.

I am an angle phone and a teacher. I can't tell you how many times I have to tell young children "I don't know why, sometimes you just have to memorize." We start with phonics then whole language and just straight memorization. If it's difficult to learn as a native speaker, how can it be the easiest?
Any person can learn esperanto in a short period of time by themself for free. Easiest? Absolutely.

Designed to be an auxiliary language, it was created WITHOUT difficulties in order to be learn the most easy way.

Esperanto was planned to be easy and then it's 100% regular. I've never seen a language like that which you can speak fluently in a few months.

Esperanto is a language without exceptions or difficult grammatical rules. It is by far the easiest language I have ever studied.

I've only spent an hour learning it, but I can already read and understand half of the words in regular sentences

Definitely the easiest of languages!