Signifier of the Other

The "signifier of the Other" names a precise structural position in Lacan's account of the neurotic subject: it is the signifier that belongs to, or emanates from, the locus of the Other (the symbolic order, the unconscious, the field of language) and whose import remains opaque to the subject who is nonetheless governed by it. In Seminar VI, Lacan demonstrates this through Ella Sharpe's case: the patient's compulsive cough is not a somatic symptom to be decoded at the level of affect or meaning-comprehension, but a signifier that poses an unconscious question — "what does the Other want?" — to which the subject has no conscious access. The signifier of the Other is thus precisely what the neurotic circles around without ever grasping: it is hidden, operative, and the very source of the neurotic's characteristic wondering and uncertainty about the Other's desire.

This concept belongs to the broader structural logic whereby the subject is constituted through — and not merely in relation to — the signifier. The barking-dog fantasy analyzed in Seminar VI illustrates this: the subject does not simply use a signifier to represent itself; rather, the subject becomes something other-than-what-it-is through a signifier drawn from the Other's field. The signifier of the Other is therefore distinct from any affective or imaginary content; it is a formal, symbolic element that anchors the subject's position in the unconscious question without resolving it, functioning as the hidden axis around which the neurotic's symptoms and fantasies are organized.

This concept appears in jacques-lacan-seminar-6 (p. 171), Lacan's seminar on desire and its interpretation, which is precisely the period when the full architecture of the Graph of Desire is being elaborated. The "signifier of the Other" can be read as a local name for what the Graph formalizes as S(Ⱥ) — the signifier of the barred Other, the node that marks the point where the Other's code fails to deliver a final, authenticating answer. The neurotic's question ("what does the Other want?") is the lived, clinical expression of the structural impasse the Graph maps topologically: the subject sends its demand upward through the chain only to find a lack where it sought a guarantee. The concept thus stands in close proximity to the Graph's upper circuit, where desire and the unconscious are constituted precisely through the non-response of a barred Other.

The concept also directly implicates Castration, Desire, Neurosis, and Fantasy as they function in this seminar. Because the signifier of the Other is what is "hidden from the neurotic," it is the structural correlate of the castrating impact of the symbolic order: the subject is deprived not of an object but of knowledge of the signifier that determines it — a deprivation that is, properly speaking, symbolic. This unknowing is the condition of desire: the neurotic's perpetual wondering about the Other's desire is the clinical form of the general Lacanian thesis that "the desire of man is the desire of the Other." Fantasy ($◇a), in this context, is the subject's attempt to stabilize an answer to this hidden signifier — to give imaginary consistency to what the symbolic cannot close. The "signifier of the Other" is therefore not an isolated term but a clinical specification of the structural gap that castration opens, desire keeps open, and fantasy attempts to cover.

Seminar VI · Desire and Its InterpretationJacques Lacan · 1958 (p.171)

the signifier of the Other [or: the Other's signifier, le signifiant de l'Autre]. This signifier is precisely what is hidden from the neurotic, inasmuch as he does not know its impact and he wonders about it.

The phrase "hidden from the neurotic" is theoretically loaded because it locates the signifier of the Other not in a content the neurotic represses, but in a structural opacity — the neurotic "does not know its impact," meaning the signifier operates causally and constitutively before and beneath any conscious comprehension; the verb "wonders" (s'interroge) then precisely names the neurotic's symptomatic relationship to this hidden signifier as a perpetual, unanswerable question about the Other's desire.