grounds
US /ɡrɑʊndz/
UK /ɡrɑʊndz/

1.
2.
3.
a reason, cause, or justification for an action or belief
:
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There are no grounds for complaint.
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On what grounds do you make such an accusation?
1.
1.
having a good understanding of the practical realities of life
:
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She's a very grounded person, always calm and sensible.
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Despite his success, he remains humble and grounded.