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Sure

adj. calm, capable everyday

What it means

Meaning 1

Confident in one's knowledge, judgment, or ability.

Reach for it when describing settled personal confidence without claiming infallibility

After the rehearsal, Mina felt sure of her opening and flexible about the questions.

Meaning 2

Reliable, controlled, or unlikely to fail.

Reach for it when praising movement, judgment, or a method that can be trusted

The surgeon's sure hand placed the final stitch without haste.

Words to choose between 8

By register, from playful at the top to literary at the bottom, and by meaning across. Tap a word to see when it fits.
Meaning 1Meaning 2
everyday
  • Sure (this word)
warm
professional
formal
  • Sure (this word)

Meaning 1: Confident in one's knowledge, judgment, or ability.

  • warm

    confident

    Fits when positive belief in personal ability is the main message

    Careful Sure can rest on knowledge of a fact rather than self-confidence.

  • professional

    certain

    Fits when absence of doubt about a fact is intended

    Careful Certainty is stronger and may be unjustified where sure only signals confidence.

  • professional

    convinced

    Fits when reasons have produced a firm belief

    Careful Someone can feel sure intuitively without being convinced by an argument.

  • formal

    assured

    Fits when confidence appears settled and polished

    Careful Assured can describe performance without revealing what the person knows.

  • formal

    definite

    Fits when a conclusion or arrangement is fixed and unambiguous

    Careful Definite concerns clarity or finality, not a person's controlled ability.

Meaning 2: Reliable, controlled, or unlikely to fail.

  • warm

    steady

    Fits when control remains consistent through movement or pressure

    Careful Steadiness does not by itself imply accuracy or confidence.

  • professional

    reliable

    Fits when repeated performance can be counted on

    Careful Reliable is broader and less focused on confident control in the moment.

  • professional

    secure

    Fits when attachment, position, or construction will not give way

    Careful A secure grip may be firm without the deftness of a sure hand.

Opposites 3

  • unsure
  • doubtful
  • unsteady

Common phrases 3

  • sure of yourself

    You can be sure of yourself and still invite a second opinion.

  • sure hand

    A sure hand guided the brush around the damaged lettering.

  • sure sign

    New buds were a sure sign that the rescued tree had survived.

Definitions and examples are written for this site. How words are chosen Recording: Dvortygirl, American accent, from Wikimedia Commons, CC BY-SA 3.0 Updated