squareness

squareness — noun

1. The degree to which an object or shape has the properties of a square — four equ

1.nounC1
Definition

The degree to which an object or shape has the properties of a square — four equal sides that meet at 90-degree angles.

Example

Nadia checked the squareness of the wooden frame with a set square before gluing.

collocation: check the squareness of [object]

The architect was unhappy with the squareness of the kitchen tiles after laying them.

Common collocations
  • check the squareness of
  • measure the squareness of
  • test the squareness of
  • the squareness of a [frame/corner/edge/tile/window]
  • perfect squareness
  • rough squareness
Synonyms
  • rectangularity

    Broader term — applies to any right-angled four-sided shape, while squareness requires equal sides.

  • angular precision

    Focuses on the accuracy of the corners rather than the overall shape.

Antonyms
  • roundness

    Refers to curved, circular shapes rather than sharp-edged ones.

Grammar Patterns

the squareness of + noun phrase

Usage Note

Uncountable noun — no plural form. Most common in practical, hands-on contexts such as carpentry, design, construction, and geometry. Not used for abstract or figurative meanings of 'square' (such as honesty or fairness).

Common Mistakes

I checked the squareness of his personality.
I checked the squareness of the table corner.
'squareness' refers only to physical shape, not character traits.
The squarenesses of the two boards were different.
The squareness of the two boards was different.
'squareness' is uncountable and does not take a plural form.

Word family

  • square
    adjectiveA2
  • square
    nounA2
  • squarely
    adverbB2
  • square
    verbB1

Synonym discussion

Sense: noun/1

Squareness specifically describes the quality of having four equal sides meeting at right angles — the exact shape of a square. Rectangularity is a broader term that applies to any four-sided shape with right angles, regardless of whether the sides are equal. Angularity refers more generally to having sharp corners or angles, without specifying that they are exactly 90 degrees. Orthogonality is a mathematical or engineering term for perpendicularity between lines or planes, and is used mainly in technical contexts rather than for everyday physical shapes. For practical use: 'The carpenter checked the squareness of the door frame' — you would not say 'rectangularity' unless you meant any rectangle, and 'orthogonality' would sound overly technical.

rectangularityangularityorthogonality

Common collocations

Nouns

Adverbs

Phrases

  • check the squareness of
  • test for squareness
  • lack of squareness

Prepositions

Etymology

LatinOld FrenchEnglish

Comes from the word 'square', which entered English from Old French 'esquare', itself from Latin 'exquadrare' meaning 'to square off'. The suffix '-ness' turns the adjective 'square' into a noun that names the quality or state of being square.