AUI (constructed language)

aUI (constructed pronunciation: [auːiː]) is a philosophical and ideographic a priori language created in the 1950s by W. John Weilgart, Ph.D. (March 9, 1913 – January 26, 1981; born Johann Wolfgang Weixlgärtner,^[2] and also known as John W. Weilgart^[3]), a philosopher and psychoanalyst originally from Vienna, Austria. He described it as "the Language of Space", connoting universal communication, and published the fourth edition of the textbook in 1979;^[3] a philosophic description of each semantic element of the language was published in 1975.^[4]

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages)

A major contributor to this article appears to have a close connection with its subject. (August 2025)

This article may contain excessive or inappropriate references to self-published sources. (August 2025)

An editor has determined that sufficient sources exist to establish the subject's notability. (August 2025)

This article may rely excessively on sources too closely associated with the subject, potentially preventing the article from being verifiable and neutral. (August 2025)

Quick facts Created by, Date ...

aUI
Created by	W. John Weilgart, PhD
Date	1952
Setting and usage	Designed to dissolve the discrepancy between homonymous and synonymous words
Purpose	auxiliary language logical or philosophical language A Priori oligosynthetic aUI
Sources	a priori
Language codes
ISO 639-3	(a proposal to use `aiu` was rejected in 2019^[1])
Glottolog	None
IETF	`art-x-auii`
This article contains IPA phonetic symbols. Without proper rendering support, you may see question marks, boxes, or other symbols instead of Unicode characters. For an introductory guide on IPA symbols, see Help:IPA.

In his psychotherapy work, Weilgart sometimes used client-created aUI formulations to reveal possible subconscious associations to problematic concepts.^[5] aUI can also be considered an experiment in applied cognitive lexical semantics, and Weilgart originally envisioned it serving as an international language for "Peace through Understanding".

aUI has 31 morpheme-phonemes each with an associated meaning. That is, each morpheme corresponds to exactly one phoneme and exactly one sememe.

Characters ^[6]

More information Character, Meaning ...

Meaning	Letter	IPA	Description
Space	a	[a]	The most open vowel, the mouth opens to a wide, open Space.
Movement	e	[e]	A spiral galaxy’s primal cosmic movement: a front vowel, indicating forward Movement.
Light	i	[i] or [ɪ]	Source of Light and rays spreading out: the quickest, high frequency vowel, reflecting that Light is the fastest thing in the universe.
Life	o	[o]	A leaf – photosynthesis is the energy basis of earthly Life: pronounced short with the lips rounded.
Human	u	[u]	Human legs or arms, depicting duality; similar to Chinese symbol.
Time	A	[aː]	We measure Time in the elliptical orbits of earth and moon; an elongation of space: a long vowel, reflecting the passage of Time.
Matter	E	[eː]	A brick-stone of solid Matter: a long-held vowel, reflecting how Matter lasts longer than movement.
Sound	I	[iː]	A sinusoidal Sound wave: a long-held vowel, reflecting how Sound travels more slowly than Light.
Feeling	O	[oː]	Feelings are reflected in blood pressure and pulse: a back, lower (than U) vowel, as we often hold back our most inner Feelings, which well up inexplicably from below.
Spirit / Mind	U	[uː]	Trinities are found within philosophy, psychology, and religions: a back, higher (than O) vowel, reflecting how a our thoughts are often held back and how the Spirit is mysterious.
Condition	Ø (formerly Q)	[œ] or [øː]	Conditions create restrictions similar to parentheses.
Negation	Y	[y] preceding consonants; [j] preceding vowels	The minus sign Negates or opposes whatever stands below it and phonetically acts as the opposite: Y before a consonant acts like a vowel; y before a vowel, acts more like a consonant.
Together	b	[b]	Two dots joined Together by an arc: a voiced bilabial stop articulated with both lips clearly pressed Together.
Existence	c	[ʃ]	When one stands up, one Exists more prominently (Latin ex-istere, to stand out): an unvoiced fricative.
Through	d	[d]	A line crossing Through another: a voiced alveolar stop in which the tongue crosses diagonally through the mouth.
This	f	[f]	An abbreviated arrow pointing down to This: an unvoiced labiodental fricative where the lips point at a subject.
Inside	g	[ɡ]	A dot Inside a circle: a voiced velar (guttural) stop pronounced Inside the throat.
Question	h	[h]	A simplified Question mark: an unvoiced fricative as we breathe or gasp a Question, opening the mouth in astonishment.
Equal	j	[ʒ]	Equation sign joined so it can be written in one line: a voiced fricative, an even sound.
Above	k	[k]	A dot Above a line like a musical quarter note: an unvoiced stop articulated with the tongue touching the upper palate.
Around	L	[l]	A circle aRound a circle: is a lateral consonant made by Rounding the tongue.
Quality	m	[m]	Quality – a rounded form of Quantity – is sensed more as an intuitive feeling, and so is rounded like the Feeling symbol: a bilabial nasal, related to how smell can determine Quality.
Quantity	n	[n]	An angular container to measure Quantity accurately: an alveolar nasal.
Before	p	[p]	A dot Before a line: an unvoiced bilabial stop puffed out in Front of the lips.
Positive	r	[ʀ] or [r]	A plus sign indicating Positive, Good.
Thing	s	[s]	Round thing, closed in itself, lends concreteness to concepts: an unvoiced fricative and sibilant hissed between the teeth.
Toward	t	[t]	A shortened arrow pointing Toward something: an unvoiced alveolar stop articulated with the tongue tipped ‘Toward’.
Active	v	[v]	A bolt of lightning is most Active in nature; Power rising up into Action: a voiced labiodental fricative that requires vibration of the lips – voiced, as Actions require commitment.
Power	w	[w]	Potential Power lying down: requires a little extra Power in keeping both the rounded lips partly open and taut and adding the voice.
Relation	x	[x]	A double arrow Relating two objects: an unvoiced fricative articulated with friction, as Relations can cause friction.
Part	z	[z]	Half of a round object cut aPart: a voiced dental fricative, as teeth bite parts off, and sounding as a ‘buzz-saw’.