contemplate
US /ˈkɑːn.t̬əm.pleɪt/
UK /ˈkɑːn.t̬əm.pleɪt/

1.
look thoughtfully for a long time at
:
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He sat for a long time contemplating the painting.
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She stood at the window, contemplating the city lights.
2.
think about something for a long time or in a serious way
:
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She contemplated the possibility of moving to another country.
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He needs time to contemplate his next move.