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English Words Starting With A

8,734 entries — pick a word to see its definition, pronunciation, and usage.

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Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

antimacassar
nounVery Low
/ˌæn.ti.məˈkæs.ə/A piece of cloth placed over the back or arms of a chair or sofa to protect it from stains, especially from hair oil.
antimachus
nounExtremely Rare / Specialized
/ænˈtɪməkəs/A Greek proper noun referring to either a Trojan elder in the Iliad or a later Greek poet.
antimalarial
adjectivenounC1-C2 / Low-frequency / Technical
/ˌæn.ti.məˈleə.ri.əl/A substance (drug, treatment) used to prevent or treat malaria.
antimanic
adjectivenounVery Low
/ˌæntiˈmænɪk/Something that counteracts or reduces the symptoms of mania.
antimask
nounLow to Medium
/ˌæn.tiˈmɑːsk/Opposed to or against the wearing of masks, especially as a public health measure.
antimasque
nounVery Low
/ˈæntɪˌmɑːsk/A comic, grotesque, or disorderly performance that precedes or contrasts with a formal masque.
antimatter
nounC1
/ˈæn.tiˌmæt.ə/Material composed of antiparticles, such as positrons and antiprotons, which have the same mass as ordinary particles but opposite electric charge and other quantum properties.
antimension
nounVery Low / Specialist
/ˌantɪˈmɛnsɪɒn/A liturgical cloth, analogous to an altar cloth, used in Eastern Christian churches, which contains relics and an icon of the entombment of Christ. It is consecrated by a bishop and serves as a portable altar.
antimere
nounVery Low
/ˈæntɪmɪə/One of the symmetrical, mirror-image segments or parts of a bilaterally symmetrical organism.
antimeridian
nounLow frequency; very specialized.
/ˌantɪməˈrɪdɪən/The meridian of longitude 180° (or ±180°), directly opposite the prime meridian (0°). It forms the basis for the International Date Line.
antimetabolite
adjectivenounC2 (Very Low Frequency)
/ˌæn.ti.məˈtæb.ə.laɪt/A substance that disrupts normal cellular metabolism by interfering with the function of essential metabolites.
antimicrobial
adjectivenounC1
/ˌæn.ti.maɪˈkrəʊ.bi.əl/A substance (like a drug or chemical) that kills or inhibits the growth of microorganisms such as bacteria, viruses, fungi, or protozoa.
antimilitant
adjectivenounVery Low
/ˌæn.tiˈmɪl.ɪ.tənt/Opposed to militant or aggressive activism; against the use of confrontational or violent methods in political or social movements.
antimissile
adjectivenounC2
/ˌæn.tiˈmɪs.aɪl/Designed to counter, intercept, or destroy an incoming missile.
antimissile missile
nounC2
/ˌæntiˈmɪsaɪl ˈmɪsaɪl/A defensive missile designed to intercept and destroy an incoming hostile missile.
antimitotic
adjectivenounC2
/ˌantɪmʌɪˈtɒtɪk/Acting against or inhibiting the process of cell division (mitosis).
antimonarchist
adjectivenounC2/Rare
/ˌæn.tiˈmɒn.ə.kɪst/A person who opposes monarchy as a system of government.
antimonate
nounRare / Technical
/ˈantɪməneɪt/A salt or ester of antimonic acid, containing the anion SbO₄³⁻ or related polymeric anions.
antimonial
adjectivenounC2
/ˌantɪˈməʊnɪəl/Of or containing antimony, especially in a trivalent state.
antimonide
nounVery Rare
/ˈæn.tɪ.mə.naɪd/A binary compound in which antimony is the more electronegative element, typically with a metal.

Showing 5521–5540 of 8734 words.