adjective
DUBIOUS : My father was a very gentle man, always helping people.
GOOD : My father was a very kind man, always helping people.
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gentle = (1) used to describe someone who never shows anger or impatience in what they say or do: 'His brother was always ready for a fight, but Tim was quiet and gentle.'
(2) not loud, forceful or rough: 'He spoke to the child in a quiet, gentle voice so as not to frighten her.' 'She found the doctor's gentle manner very reassuring.'