Answer:
Callous
(kæləs )
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<h2>ADJECTIVE
</h2>
A callous person or action is very cruel and shows no concern for other people or their feelings. [...]
callousness UNCOUNTABLE NOUN
callously ADVERB [ADVERB with verb]
Explanation:
disregard
(dɪsrɪgɑːʳd )
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VERB
If you disregard something, you ignore it or do not take account of it. [...]
Disregard is also a noun. [...]
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