concentrated
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/ˈkɑːnsntreɪtɪd/
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/ˈkɒnsntreɪtɪd/
focused and determined to do something
He made a concentrated effort to finish the work on time.
having more of a substance because water or other things have been removed
The liquid is found in a highly concentrated form.
existing or happening in a small area or at one time
Kate sat up fully, her attention now totally concentrated.