• Sign


    • IPA: /saɪn/
    • Rhymes: -aɪn
    • Homophones: sine

    Origin 1

    From Old French signe, from Latin signum ("a mark, sign, token"); root uncertain.

    Full definition of sign



    (plural signs)
    1. (sometimes also used uncountably) A visible indication.
      Their angry expressions were a clear sign they didn't want to talk.
      Those clouds show signs of raining soon.
      Those clouds show little sign of raining soon.
      Signs of disease are objective, whereas symptoms are subjective.
      The hunters found deer sign at the end of the trail.
      • 1898, Winston Churchill, The Celebrity Chapter 5, Although the Celebrity was almost impervious to sarcasm, he was now beginning to exhibit visible signs of uneasiness, the consciousness dawning upon him that his eccentricity was not receiving the ovation it merited.
    2. A clearly visible object, generally flat, bearing a short message in words or pictures.
      The sign in the window advertised a room for rent.
      • MacaulayThe shops were, therefore, distinguished by painted signs, which gave a gay and grotesque aspect to the streets.
    3. A traffic sign.
      I missed the sign at the corner so I took the wrong turn.
    4. A meaningful gesture.
      I gave them a thumbs-up sign.
    5. Any of several specialized non-alphabetic symbols.
      The sharp sign indicates that the pitch of the note is raised a half step.
    6. (astrology) An astrological sign.
      Your sign is Taurus? That's no surprise.
    7. (mathematics) Positive or negative polarity.
      I got the magnitude right, but the sign was wrong.
    8. A specific gesture or motion used to communicate by those with speaking or hearing difficulties; now specifically, a linguistic unit in sign language equivalent to word in spoken languages.
      • 1603, John Florio, translating Michel de Montaigne, Essays, II.12:And why not, as well as our dumbe men dispute, argue and tell histories by signes?
      • 2007, Marcel Danesi, The Quest for Meaning:In American Sign Language (ASL), for instance, the sign for 'catch' is formed with one hand (in the role of agent) moving across the body (an action) to grasp the forefinger of the other hand (the patient).
    9. (uncountable) sign language in general
      Sorry, I don't know sign very well.
    10. An omen.
      "It's a sign of the end of the world," the doom prophet said.
    11. (medicine) A property of the body that indicates a disease and, unlike a symptom, is unlikely to be noticed by the patient.
    12. A military emblem carried on a banner or standard.

    Related terms

    Terms etymologically related to sign (noun)

    Origin 2

    From Anglo-Norman seigner, seiner et al., Old French signer et al., and their source, Latin signāre ("to mark, seal, indicate, signify"), from signum ("a mark, sign"); see Etymology 1, above. Compare sain.


    1. To make a mark
      1. (transitive, now rare) To seal (a document etc.) with an identifying seal or symbol. from 13th c.The Queen signed her letter with the regal signet.
      2. (transitive) To mark, to put or leave a mark on. from 14th c.
        • 1726, Elijah Fenton, The Odyssey of Homer:Meantime revolving in his thoughtful mind
          The scar, with which his manly knee was sign'd .
      3. (transitive) To validate or ratify (a document) by writing one's signature on it. from 15th c.
        • c. 1597, William Shakespeare, The Merchant of Venice:Enquire the Iewes house out, giue him this deed,
          And let him signe it .
      4. (transitive) More generally, to write one's signature on (something) as a means of identification etc. from 15th c.I forgot to sign that letter to my aunt.
      5. (transitive or reflexive) To write (one's name) as a signature. from 16th c.Just sign your name at the bottom there.I received a letter from some woman who signs herself ‘Mrs Trellis’.
      6. (intransitive) To write one's signature. from 17th c.Please sign on the dotted line.
      7. (intransitive) To finalise a contractual agreement to work for a given sports team, record label etc. from 19th c.
        • 2011, The Guardian, (headline), 18 Oct 2011:Agents say Wales back Gavin Henson has signed for Cardiff Blues.
      8. (transitive) To engage (a sports player, musician etc.) in a contract. from 19th c.It was a great month. I managed to sign three major players.
      9. To make the sign of the cross
        1. (transitive) To bless (someone or something) with the sign of the cross; to mark with the sign of the cross. from 14th c.
          • Book of Common PrayerWe receive this child into the congregation of Christ's flock, and do sign him with the sign of the cross.
          • 1971, Keith Thomas, Religion and the Decline of Magic, Folio Society 2012, p. 34:At the baptismal ceremony the child was signed with the cross in holy water.
        2. (reflexive) To cross oneself. from 15th c.
          • 1855, Robert Browning, Men and Women:Shaking a fist at him with one fierce arm,
            Signing himself with the other because of Christ.
      10. To indicate
        1. (intransitive) To communicate using a gesture or signal. from 16th c.
          • Sir Walter Scott:I signed to Browne to make his retreat.
        2. (transitive) To communicate using gestures to (someone). from 16th c.He signed me that I should follow him through the doorway.
        3. (intransitive) To use sign language. from 19th c.
        4. (transitive) To furnish (a road etc.) with signs. from 20th c.

    Related terms

    Terms etymologically related to sign (verb)


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