死口

死口唔認

to firmly deny

最後如果佢明明係鍾意你但又死口都唔認，搞到你哋開始唔到，一係佢就唔夠膽行出嗰一步，咁你就主動啲啦；[…]

In the end, if he clearly likes you but refuses to admit it, making it so that you two can't progress, one possibility is that he is too afraid to take the next step, in which case you must be more proactive; […]

只有謝蒼生和陳先生死口不說話，不肯合作。

Only Xie Cangsheng and Mr. Chan refused to speak and were unwilling to cooperate.

本人靠邊蘇聯科學家，證據確鑿，碎片砂粒俱全，但很奇怪西方的科學家，死口咬實另一些說不服人理由，衰過整天說謊話的美國太空總署（NASA）。