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бессердечный adj. stresses
gen.	heartless; unfeeling; unnatural; as cold as charity; cold-hearted; empty-hearted; hard-fisted; hard-handed; hard-hearted; iron-hearted; ossified; soulless; coldhearted (ЛВ); hard as the nether millstone; cruel-hearted (Anglophile); dead inside (Freidin); empty hearted; hard fisted; hard handed; hard hearted; iron hearted; as hard as nails; cold as charity; cruel; seared; callous; leaden hearted; profligate; ruthless; stone-hearted; stony; insensitive (Abysslooker)
Makarov.	hardened
slang	hard-boiled; hardboiled (Interex)
vulg.	no heart to appeal to and no arse to kick
бессердечно adv.
gen.	without remorse; cruelly; cold-heartedly (Lady_Ales); callously; ruthlessly; heartlessly; hardheartedly; pitilessly
obs.	profligately

бессердечный: 17 phrases in 2 subjects

General	15
Makarov	2