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English Words Starting With R

5,802 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)

rescue
adjectivenounverb+1B1
/ˈrɛskjuː/To save someone or something from a dangerous or distressing situation.
rescue dog
nounB1-B2
/ˈreskjuː dɒɡ/A dog that has been saved from a harmful or neglectful situation, such as an animal shelter or the streets.
rescue grass
nounLow (Specialist/Agricultural)
/ˈrɛs.kjuː ɡrɑːs/A type of hardy, drought-resistant grass (Bromus catharticus, also known as Bromus unioloides) originally from South America, used for pasture and forage.
rescue mission
nounB2
/ˈrɛskjuː ˌmɪʃ(ə)n/An organized operation to save someone or something from a dangerous or difficult situation.
reseal
verbLow
/ˌriːˈsiːl/To seal (a container, envelope, etc.) again after it has been opened.
research
nounverbverb-intransitive+1High
/rɪˈsɜːtʃ/ (noun); /rɪˈsɜːtʃ/ or /ˈriːsɜːtʃ/ (verb)A systematic investigation or study to establish facts, reach new conclusions, or revise existing theories.
research and development
nounHigh in business and academic contexts; Medium in general English.
/rɪˈsɜːtʃ ənd dɪˈveləpmənt/Systematic work undertaken to increase knowledge and devise new applications or improve existing ones.
research library
nounlow
/rɪˈsɜːtʃ ˈlaɪbrəri/A library that houses a comprehensive and often specialized collection of materials, such as books, journals, and archives, primarily to support in-depth academic or scholarly research, rather than general public use.
research park
nounC1
/rɪˈsɜːtʃ pɑːk/A designated area where businesses, universities, and research institutions are co-located to foster innovation, collaboration, and commercialisation of scientific or technological research.
research quantum
nounC1
/rɪˈsɜːtʃ/The systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.
reseat
verbverb-transitiveLow
/ˌriːˈsiːt/To seat someone or something again, or to put a new seat on something.
reseau
nounC2 / Very Rare
/ˈreɪzəʊ/A network or mesh; a system of interconnected lines or channels.
resect
verbverb-transitiveLow
/rɪˈsɛkt/To cut out or remove a part, especially in a surgical procedure.
resection
nounLow
/rɪˈsɛkʃ(ə)n/The surgical removal of part of an organ, tissue, or structure.
reseda
adjectivenounLow
/rɪˈsiːdə/A plant of the genus Reseda, especially the mignonette, known for its fragrant flowers; also a pale greyish-green colour resembling the plant.
reselect
verbC1
/ˌriː.sɪˈlekt/to select again or choose a second time.
resell
verbB2
/ˌriːˈsɛl/To sell something that one has previously bought.
resemblance
nounB2
/rɪˈzɛm.bləns/The state of being similar or alike in appearance or nature.
resemble
verbverb-transitiveB2
/rɪˈzɛmb(ə)l/To have a similar appearance or qualities to someone or something else.
resend
verb-transitiveB1 (Intermediate)
/ˌriːˈsend/to send something again

Showing 2801–2820 of 5802 words.