Antonyms of adj unsentimental

1 sense of unsentimental

Sense 1
tough-minded, unsentimental -- (facing facts or difficulties realistically and with determination)

INDIRECT (VIA tough) -> tender -- (given to sympathy or gentleness or sentimentality; "a tender heart"; "a tender smile"; "tender loving care"; "tender memories"; "a tender mother")

Similarity of adj unsentimental

1 sense of unsentimental

Sense 1
tough-minded, unsentimental -- (facing facts or difficulties realistically and with determination)
       => tough (vs. tender) -- (not given to gentleness or sentimentality; "a tough character")