"kinder" in the adjective sense
having or showing a tender and considerate and helpful nature used especially of persons and their behavior
"kind to sick patients"
"a kind master"
"kind words showing understanding and sympathy"
"thanked her for her kind letter"
2. kind, genial
agreeable, conducive to comfort
"a dry climate kind to asthmatics"
"the genial sunshine"
"hot summer pavements are anything but kind to the feet"
3. kind, tolerant
tolerant and forgiving under provocation
"our neighbor was very kind about the window our son broke"
Source: WordNet® (An amazing lexical database of English)
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