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verb
2 the programme will underline the health benefits of white meat:
emphasize, give emphasis to, stress, put/lay stress on, highlight, accentuate, accent, call/draw attention to, focus (attention) on, zero in on, spotlight, throw into relief, give prominence to, bring to the fore, foreground, bring home, point up, play up, make a feature of;
informal rub in.
▷antonyms play down, minimize.
underline Oxford Dictionary of English