noun: The hypothesis that organisms must constantly adapt and evolve in order to survive in an evolutionary arms race.
Red Queen hypothesis
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titter
Definition: (verb) To laugh in a restrained, nervous way. Synonyms: giggle. Usage: Mention sex therapy and most people …
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descamisado
noun: A very poor person.
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blather
Definition: (verb) To talk foolishly. Synonyms: smatter, babble. Usage: Patrick, oblivious to his sister's visible disinterest, continued to …
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hysteric
adjective: Exhibiting an uncontrolled or overly emotional state, volatility, attention-seeking behavior, etc. noun: An overly emotional or unstable …
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aviary
Definition: (noun) A large enclosure for holding birds in confinement. Synonyms: volary, bird sanctuary. Usage: We visited the …
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heteroclite
noun: 1. A person who is unconventional; a maverick. 2. A word that is irregularly formed. adjective: 1. …
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pilothouse
Definition: (noun) An enclosed compartment from which a vessel can be navigated. Synonyms: wheelhouse. Usage: Alone in the …
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croesus
noun: A very wealthy person.
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glower
Definition: (noun) A sullen or angry stare. Synonyms: glare. Usage: His frown deepened into a glower of resentment. …
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encyclical
noun: An official letter. adjective: For wide circulation.