形容詞
中醫概念，形容身體會承受唔到食物嘅某啲屬性而發病 (in Chinese medicine, of food) bad for health
有傷口就唔好食蝦蟹，好毒。
有伤口就唔好食虾蟹，好毒。
jau5 soeng1 hau2 zau6 m4 hou2 sik6 haa1 haai5, hou2 duk6. Crabs and prawns should be avoided as they are bad for wound healing.
竹筍毒唔毒？我而家個病食唔食得？
竹笋毒唔毒？我而家个病食唔食得？
zuk1 seon2 duk6 m4 duk6? ngo5 ji4 gaa1 go3 beng6 sik6 m4 sik6 dak1? Will bamboo shoots affect my illness? Can I eat them?
佢想搞到我家破人亡，佢真係好毒。
佢想搞到我家破人亡，佢真系好毒。
keoi5 soeng2 gaau2 dou3 ngo5 gaa1 po3 jan4 mong4, keoi5 zan1 hai6 hou2 duk6. She wants to break my family apart. She is indeed an evil woman!
形容詞、潮語
專注於一種或幾種癖好，冇乜異性緣，唔擅長社交，冇乜自信；通常帶貶義。 nerdy; geeky; lacking confidence and social skills
咪成日打機咁毒啦。
咪成日打机咁毒啦。
mai5 seng4 jat6 daa2 gei1 gam3 duk6 laa1. Stop playing video games all day like a geek.
冇女仔會鍾意你啲咁毒嘅人囉。
冇女仔会钟意你啲咁毒嘅人啰。
mou5 neoi5 zai2 wui5 zung1 ji3 nei5 di1 gam3 duk6 ge3 jan4 lo1. No girl would date a geek like you.
傳説光緒皇帝係俾慈禧太后毒死㗎！
传说光绪皇帝系俾慈禧太后毒死㗎！
cyun4 syut3 gwong1 seoi5 wong4 dai3 hai6 bei2 ci4 hei1 taai3 hau6 duk6 sei2 gaa3! Legend has it that the Guangxu Emperor was poisoned to death by Empress Dowager Cixi.
Definitions (Wiktionary)
character
severe; fierce; violent
外面的太陽很毒。
外面的太阳很毒。
wài miàn de tài yáng hěn dú ． The sun outside is very fierce.
character, obsolete
pain; suffering
character, obsolete
calamity; disaster; trouble
character, obsolete
to hate; to resent
character, obsolete
crime; evil
character
to poison; to administer poison to
毒死蟑螂
毒死蟑螂
dú sǐ zhāng láng to kill cockroaches with poison
character, obsolete
heavy; thick
character, Cantonese, Hong-Kong
nerdy
character
malicious; cruel
他的心腸真毒！
他的心肠真毒！
tā de xīn cháng zhēn dú ！ How cruel is he!
41 tentative diagnoses, with 1 death among them […] Hong Kong Medical Association Infectious Diseases Advisory Committee leader LEUNG Chi-chiu said in our program "Saturday Accountability" that compared to viruses of the same type, such as MERS and SARS, Wuhan has only had one case of death so far; he believes that the death rate of this viral pneumonia cannot be considered to be high.