English Vocabulary
Pick a CEFR level (A1–C2) — A1 is the friendliest place to start — and browse its words grouped by topic: travel, food, the body, emotions, and more. Each word shows its meaning, example sentences, and US/UK pronunciation.
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107 words
unperiodic
C2+
/ˌʌnpɪriˈɑdɪk/
not periodic; not recurring at regular intervals or lacking a repeating pattern
equimultiple
C2+
/ˌiːkwɪˈmʌltəpəl/
one of two or more quantities produced by multiplying the original quantities by the same number
pre-coordinate
C2+
/ˌpriːkoʊˈɔrdənət/
existing or formulated before a coordinate system has been introduced
quasi-parallelogram
C2+
/ˌkweɪzaɪ ˌpærəˈlɛləˌɡræm/
a figure that resembles or approximately satisfies the defining relations of a parallelogram without being an exact Euclidean parallelogram
logico-mathematical
C2+
/ˌlɑː.dʒɪ.koʊˌmæθ.əˈmæt.ɪ.kəl/
relating jointly to formal logic and mathematics, especially to work that expresses mathematical theories through logical systems
setier
C2+
/səˈtjeɪ/
any of several old French units of capacity or land area, whose value varied by region and commodity
signless
C2+
/ˈsaɪn.ləs/
in mathematics, written or considered without an explicit positive or negative sign
arithmetize
C2+
/əˈrɪθməˌtaɪz/
to treat or reformulate a mathematical system using only the fundamental concepts and operations of arithmetic
finitist
C2+
/ˈfaɪnaɪtɪst/
an adherent of finitism, especially the view that mathematics should use only finite objects or procedures
chiliagon
C2+
/ˈkɪliəˌɡɑn/
a polygon with one thousand sides and one thousand angles
scalenum
C2+
/skəˈliːnəm/
a scalene triangle, having three sides of unequal length