Englishfor English speakers
closely
Adverb
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If something is closely related, linked, or involved it is strongly so.
The birds on this island are closely related to those on the mainland.
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If you watch something closely, you watch it very carefully.
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If you work closely with somebody, you cooperate a lot in the work.
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If one thing follows another closely, they are close in space or time.
adjacent
Adjective
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If mathx/math has adjacent mathy/math, there is no other thing between mathx/math and mathy/math.
The house has an adjacent garage.
It's a lovely room, complete with adjacent shower and rest area.
In the word "house", the letters "h" and "o" are adjacent.
adjacent
Preposition
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If mathx/math is adjacent to mathy/math, there is no other thing between mathx/math and mathy/math.
The cinema was immediately adjacent to our house, so that every night we could hear the film.