GRE vocabulary
refractory
stubbornly resistant to control, authority, or treatment
In a sentence
The refractory infection failed to respond to several rounds of antibiotics.
Synonyms
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rabid
holding or expressing an opinion with extreme and uncompromising zeal
raconteur
a person skilled at telling entertaining anecdotes and stories
rail
to complain bitterly or protest in harsh, abusive language
ramble
to talk or write at length in a confused, aimless way
rampant
spreading or flourishing unchecked, especially of something harmful
ramshackle
loosely held together and on the verge of collapse from neglect
rancor
bitter, long-lasting resentment or ill will
rancorous
marked by deep-seated bitterness or hostility
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Vocabulary sticks when you meet it in real sentences. Practise these words inside text completion and sentence equivalence questions.