coi Hello!

Lojban is a constructed human language created to reflect the principles of logic and avoid ambiguity.

Ambiguity is the property of language to be understood multiple different ways. In the sentence I set the clock upon the table, the meaning of set is lexically ambiguous because it may have different definitons. The meaning of upon is syntactically ambiguous because it may apply to other words in the sentence in multiple different ways.

Clock 988ad1bf88db887db77d4f3d55704a969e9553bb8e4139df72c007bcae484bf0

I set the clock upon the table.

Lojban is lexically unambiguous, meaning that each word has a distinct spelling and pronunciation. Lojban has no words which can be read in multiple different ways, like right or lead.

Drani 3d2cbe7033bf697e215eece42df7049e7d764e9fa04f4246b642075331b13dbc drani right

Kurjga 6311ab9c4884bbed344ab3da0fce38f5d9eb7a1800736d56ac3cf05b12767f0d kurjga right

Pritu 4aae956b26236be144c2eb33227ef9c49c2028a97f3003a92c2215f83f85018d pritu right

Every sound always corresponds to the same letter. Lojban has no words which are spelled the same but spoken differently, like there, they're, and their.

cutci shoe

cinmo emotion

mutce much

djetlage jet lag

karce car

kurfa square

ciksi explain

rufsu rough

fonxa telephone

Lojban automatically segments words based on emphasis, meaning no two sentences are spoken the same, like she pulled along string and she pulled a long string.

basna da emphasize something

ba snada will succeed

Lojban uses words instead of special characters like quotation marks, parenthesis, exclamation points, and emoticons. This means that anything that can be written in Lojban can also be said.

la .alis. bacru lu coi li'u Alice said hello

xu do taske Are you thirsty?

nelci .ui Nice :)

Lojban is syntactically unambiguous, meaning that each word can only relate to other words in one way. Lojban has no sentences which can be parsed in multiple different ways, like I didn't come along because you asked.

mi na'e kansa do ki'u lo nu do cpedu I something other than accompany you because of your request.

mi kansa do ki'u nai lo nu do cpedu I accompany you because of something other than your request.

Lojban words are defined not only by their meaning, but by how words can be applied to them. Instead of prepositions, Lojban uses word order to determine how words are applied.

X talks/speaks to X about the subject X in the language X

mi tavla do lo badna lo jbobau I talk to you about bananas in lojban

Lojban is still semantically ambiguous, meaning that words with the same definition may refer to different things. Lojban pronouns have no case, animacy, or gender.

Mi ad5418c4206927b5095998d83c19ced7ab3bf551b2d1b193074e728b170c889b mi I

Sevzi 0231d51ee0dfb4916571f6aec90d61e42257f422f663de3812f532fbcbda059e mi me

Lanzu 3d635f12aee62f342d2c91afee4a58a8154950a2cc91c0edf1d43354600bf8c4 mi us

Ninmu bd2b128678c3328323966a6c784eeed226b71547013ef446ac2707115cd47566 ta her

Nanmu b259cb56f7a3d530cd40495454ef6f93e0f8a64b6f4e06ab18160a3bcad9f788 ta him

Tivni fa442eab09a54635e5b570e49d46f66dbd44bf830df221630b2f5199c2f7d0cc ta it

Nanla b2e306962a2c43443a6f8ea45642fe31b508a40f081791d492237c96443ddaa6 Nixli d122fc6da3126f89714efa1d8b797bf0060d4a39ed783bde4d55c37d366595e8 ta they

Lojban has no default number or tense, though number and tense may be manually specified.

Pa xrula bc41b5681e7f3db6537e5432f60e8b074fcebb4d35d0efbe4ef97480560727ab xrula a flower

Suhore xrula ce3cbf091ab0e84c2df71dd85b37fc5aaf1d16ea696da612fd5cced6c6ce2d40 xrula flowers

Baplipe 88582faff713cf7bf5c20c88aa240a35e9f32576815c5cd7c9d8d722e54fbee1 plipe will jump

Caplipe 70c77a4cc4a47e640756804e9416bc1e605bdaa1d58d486de0ae52089807cf2b plipe is jumping

Puplipe 46e02f3129d6f00f1c40fd8662fe0df8cdeff5378ea698933583771b843b4050 plipe has jumped

Lojban was created to test the idea that the language we use limits our ability to think. Instead of a simple and and or, Lojban uses concepts from formal logic.

A 029a89b13154df9293704f98a50aa41d320b85d698316a80518c6bf66ed988ae la .alis. .a la .bab. stali Alice and/or Bob stay.

E f92a30d5f333e26ff978b34ba4788395bc1823836c35110e064832fc5be0303e la .alis. .e la .bab. stali Alice and Bob both stay.

O 24e484e8bc8479cbb303c5dfef224c91516f79cbb70d254e88ef434485f2ea01 la .alis. .o la .bab. stali Alice stays if and only if Bob does.

U 75d40b0c807ad238bf334edc6f7b09bca4c8e1281770f9bd784c4ecdba183aba la .alis. .u la .bab. stali Alice stays whether or not Bob does.

Onai a1dca3ddec72f692c5d46eaf8b13167fcd44878bfd8d16b36d23865d6263e875 la .alis. .o nai la .bab. stali Alice or Bob stay, but not both.

Na a fdcbdf06db96f7440168f21ea0e4298c70fe9dc5c9d05a85b0374d03be5a7608 la .alis. na .a la .bab. stali Alice may stay if Bob does.

Lojban has over 1,200 root words which take phonemes from the most commonly spoken languages in the world, so as to be easy to learn for many people. This makes Lojban a strong candidate for an international auxiliary language.

tavla From the Chinese n, Spanish hablar, English talk, Hindi bakada, Russian govoritʹ, and Arabic kalam

Root words can be used together to express more specific concepts.

cliva leave

zifre free

cliva zifre free to leave

The Lojban vocabulary is expanded by combining these root words.

claxu lacking

cinmo emotion

caucni emotion of lacking

mi caucni do I miss you.

Lojban can be parsed by machine grammar, and has strong potential for use on computer interfaces and as a programming language. Artificial intelligence researchers have suggested using Lojban in AI development.

Lojban is still an evolving language. The Lojban community has translated Alice in Wonderland into Lojban and created a Lojban rap album. For more information, visit

co'o See you!