Englishfor English speakers
daylight
Noun
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The light from the sun that is seen in the daytime.
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The time when the sun is out and daylight can be see; the daytime.
fastness
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noun
the quality of being fixed in place as by some firm attachment
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noun
(= stronghold)
a strongly fortified defensive structure
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noun
(= speed)
a rate (usually rapid) at which something happens
the project advanced with gratifying speed