a scissor (scissors)

Short answer: No - use "scissors" or "a pair of scissors" for the hand tool. Reserve "scissor" for fixed technical terms like "scissor kick" or "scissor lift."

Quick answer

"A scissor" is not standard for the cutting tool. Say "scissors" or "a pair of scissors."

Everyday: I need scissors. / I need a pair of scissors.
Formal: Please hand me a pair of scissors from the supply cabinet.
Technical exceptions: scissor kick, scissor lift, scissor-like motion.

Core explanation: why "scissors" is plural

"Scissors" is a pluralia tantum - a noun that typically appears only in plural form. The tool has two blades working as one unit, so English treats the word as plural.

Object name: scissors (plural).
To name one unit: a pair of scissors (pair = singular).
Avoid saying "a scissor" for the hand tool.

Grammar: agreement, articles, and countability

Match the verb to the grammatical head: use plural verbs with "scissors" and singular verbs when the head is "pair."

Plural verb: The scissors are dull.
Singular with pair: A pair of scissors is dull.
Articles/determiners: some scissors, the scissors, my scissors; don't use "a" directly before scissors as a singular noun.

Hyphenation and spacing: scissor-like, scissor kick, scissor lift

"Scissor" appears in compounds and modifiers. Most common forms are two words (scissor kick, scissor lift). Use a hyphen for adjectival or uncertain compounds to aid clarity (scissor-like motion).

Two words: scissor kick; scissor lift.
Hyphenate for modifiers: scissor-like movement; scissor-operated arm.
Avoid run-together forms unless a brand or industry spells them that way.

Real usage and tone: work, school, and casual examples

Choose "a pair of scissors" in formal contexts (inventory, shipping). In classrooms and crafts, "scissors" or "a pair of scissors" are both natural. In casual speech people often say "Got scissors?"

Work (formal): Please deliver a pair of scissors to the desk.
School (instructional): Pass the scissors to the next student.
Casual (spoken): Do you have scissors I can borrow?

Examples: many wrong/right pairs you can copy

Common mistakes followed by natural fixes. Use them directly in emails, instructions, or speech.

Wrong: I need a scissor to open this package. -
Right: I need a pair of scissors to open this package.
Wrong: Can you give me a scissor from the supply closet? -
Right: Can you give me a pair of scissors from the supply closet?
Wrong: She used a scissor to cut the construction paper. -
Right: She used a pair of scissors to cut the construction paper.
Wrong: I bought a scissor yesterday. -
Right: I bought a pair of scissors yesterday.
Wrong: Please hand me a scissor from the drawer. -
Right: Please hand me the scissors from the drawer.
Wrong: Do you have a scissor for opening boxes? -
Right: Do you have scissors for opening boxes?
Usage (technical): The striker scored with a scissor kick. / We used a scissor lift to replace the sign.
Work: Inventory: Three pairs of scissors are missing from the station.

Try your sentence

Test the whole sentence rather than the phrase alone - context usually makes the right choice clear.

Fix your sentence: checklist + ready rewrites

Three quick steps: 1) Spot "a scissor" or "a scissors". 2) If you mean the tool, use "scissors" or "a pair of scissors"; if it's a technical term, keep "scissor" inside the compound. 3) Read the sentence aloud to check flow.

Formal rewrite: Please provide a pair of scissors from the supply closet.
Neutral rewrite: Do you have scissors I can use?
Casual rewrite: Got scissors?
Specific: I need a small pair of nail scissors.

Original: I need a scissor. - Rewrites: I need a pair of scissors. / I need scissors. / I need a small pair of scissors.
Original: Can you hand me a scissor? - Rewrites: Can you hand me the scissors? / Could you pass me a pair of scissors, please?
Original: There's a scissor in the kit. - Rewrites: There's a pair of scissors in the kit. / The kit contains scissors.

Memory trick: how to stop saying "a scissor"

Picture two blades joined at a pivot and attach the word "pair" to that image: pair of blades → pair of scissors. If unsure while speaking, default to "scissors" (no article) or "a pair of scissors" in formal speech.

Visual cue: see two blades - think "pair".
Fallback rule: use "scissors" or "a pair of scissors" rather than "a scissor."

Similar mistakes and quick fixes

Learners often apply "a" to pluralia tantum or two-part items. Use the plural or "a pair of" for a single physical item.

Wrong: a pants -
Right: a pair of pants
Wrong: a glasses -
Right: (my) glasses / a pair of glasses
Wrong: a pliers -
Right: a pair of pliers / pliers

Wrong: I bought a pants yesterday. -
Right: I bought a pair of pants yesterday.
Wrong: She asked for a glasses to read the label. -
Right: She asked for her glasses to read the label. / She asked for a pair of glasses.

Exceptions and specialized uses for "scissor"

"Scissor" is correct inside established phrases and technical names: scissor kick (sports), scissor lift (equipment), scissor-like (mechanical description). These uses don't make "a scissor" acceptable for the hand tool.

Correct fixed terms: scissor kick, scissor lift, scissor-like, scissor mechanism.
Follow industry or manufacturer spelling when writing technical documentation.

FAQ

Is "a scissor" ever correct?

Only in fixed technical phrases (e.g., scissor kick, scissor lift). For the hand tool, use "scissors" or "a pair of scissors."

Can I say "a scissors" or "some scissors"?

Don't say "a scissors." Use "some scissors" or just "scissors" (no article). Use "a pair of scissors" when you mean one unit.

Do scissors take singular or plural verbs?

"Scissors" takes a plural verb: "The scissors are dull." When the head is "pair," use a singular verb: "A pair of scissors is dull."

How should I refer to small or specialized scissors (nail scissors, kitchen shears)?

Use modifiers: a small pair of scissors, nail scissors, kitchen shears. If the type is clear, "scissors" alone is fine.

What if I already said "a scissor" in a meeting?

Quick correction works: "Sorry - I mean a pair of scissors" or "I mean scissors." Most listeners will understand and move on.

Need a quick check?

If you're unsure, replace "a scissor" with "scissors" or "a pair of scissors" and read the sentence aloud. Keep a short note on your phone: "scissors = plural; pair of scissors = singular idea."