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English Words Starting With B

10,030 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)

buoyancy
nounB2
/ˈbɔɪ.ən.si/The ability or tendency of an object to float in a fluid; the upward force that a fluid exerts on an object immersed in it.
buoyancy bags
plural-nounC2
/ˈbɔɪ.ən.si ˌbæɡz/Air-filled bags or bladders used in aquatic sports and water rescue to increase a person's or object's ability to float.
buoyancy compensator
nounVery Low (Technical Jargon)
/ˌbɔɪ.ən.si kəmˈpɛn.seɪ.tə/An inflatable vest worn by divers to control their buoyancy underwater and to float at the surface.
buoyed
adjectiveverbB2
/bɔɪd/Kept afloat or raised up; supported or uplifted, especially in spirit.
bupivacaine
nounC2
/ˌbjuːˈpɪv.ə.keɪn/A potent local anesthetic drug.
bupkis
nounLow to Mid
/ˈbʌp.kɪs/Nothing at all; zero; a worthless or trivial amount.
buppie
nounC1
/ˈbʌp.i/A Black urban professional.
buppy
nounLow
/ˈbʌp.i/A term used affectionately for a baby or small child, often implying cuteness or chubbiness.
buprenorphine
nounSpecialized/Technical
/ˌbjuːprɪˈnɔːfiːn/A semi-synthetic opioid medication used primarily to treat opioid use disorder and pain.
buprestid
adjectivenounExtremely rare / Highly specialised
/bjuːˈprɛstɪd/A beetle of the family Buprestidae, also known as jewel beetles or metallic wood‑boring beetles, characterized by their often iridescent or metallic coloration.
bupropion
nounLow frequency
/bjuːˈprəʊpiɒn/A prescription antidepressant medication.
buqsha
nounVery low (technical/numismatic)
/ˈbʊkʃə/A historical unit of currency in Yemen.
bur
abbreviationnounverb-transitiveLow
/bɜː/A rough, prickly seed case or flower head that clings to fur and clothing.
bur clover
nounLow
/ˈbɜː ˌkləʊ.vər/A low-growing annual plant (Medicago polymorpha) of the legume family, typically with small yellow flowers and seed pods covered in hooked spines (burs).
bur cucumber
nounLow (Specialist/Botanical)
/ˈbɜː ˈkjuːkʌmbə/The common name for Sicyos angulatus, a fast-growing annual vine with sticky, burr-like fruit.
bur marigold
nounLow
/ˈbɜː ˌmærɪɡəʊld/A type of flowering plant in the genus Bidens, characterized by its bur-like seed heads and bright yellow, daisy-like flowers.
bur oak
nounLow
/ˈbɜː ˌəʊk/A type of large North American oak tree, known for its distinctive, large acorns covered with a mossy, bur-like cap.
bur reed
nounLow (Specialist/Botanical)
/ˈbɜː ˌriːd/A type of aquatic plant of the genus Sparganium, characterized by spherical, bur-like flower heads.
burakumin
plural-nounVery Low
/ˌbʊərəˈkuːmɪn/A member of a historically discriminated-against social minority group in Japan, descended from people who worked in professions considered 'unclean'.
buran
nounLow
/bʊˈrɑːn/A strong, violent windstorm or blizzard, especially in the steppe regions of Russia and Central Asia.

Showing 9381–9400 of 10030 words.