形容詞
英文「gay」嘅音譯；一般專指男 同性戀，不過有時亦都包括女同性戀 homosexual; gay; usually used specifically for males but sometimes used for females
我有好多朋友係基嘅，聽過好多佢哋遇到嘅問題。
我有好多朋友系基嘅，听过好多佢哋遇到嘅问题。
ngo5 jau5 hou2 do1 pang4 jau5 hai6 gei1 ge3, teng1 gwo3 hou2 do1 keoi5 dei6 jyu6 dou2 ge3 man6 tai4. I have many friends who are gay, and I have heard the many problems that they face.
同成班麻甩佬去燒嘢食，一條女都冇，好基呀！
同成班麻甩佬去烧嘢食，一条女都冇，好基呀！
tung4 seng4 baan1 maa4 lat1 lou2 heoi3 siu1 je5 sik6, jat1 tiu4 neoi2 dou1 mou5, hou2 gei1 aa3! Going to a barbecue picnic with all guys and no girls! This party is a total sausagefest!
形容詞
出自部份人對男同性戀嘅定型，亦會用嚟形容男人乸型、冇男人味 due to common stereotypes of gay people, also used to describe men who are feminine or lack masculinity
佢好基㗎，成日喺屋企做facial，又買好多護膚品。
佢好基㗎，成日喺屋企做facial，又买好多护肤品。
keoi5 hou2 gei1 gaa3, seng4 jat6 hai2 uk1 kei2 zou6 fei1 sou4, jau6 maai5 hou2 do1 wu6 fu1 ban2. He is such a girl. He does facial treatments at home all the time, and he buys a lot of skin care products.
You can go to a gay bar even though you're not gay. Let me bring you there.
Examples (Wiktionary)
Mandarin
答案真的很肯定，从那时候我才知道，我其实想要做一个男人，一个gay，一个05。
答案真的很肯定，從那時候我才知道，我其實想要做一個男人，一個gay，一個05。
dá àn zhēn de hěn kěn dìng ， cóng nà shí hòu wǒ cái zhī dào ， wǒ qí shí xiǎng yào zuò yī ge nán rén ， yī ge ｇａｙ ， yī ge ０ ５ ．
The answer couldn't have been more certain. Until then, I had not realized that I indeed wanted to be a male, a gay man, a half-top-half-bottom.
Mandarin
至于有些网友说的“他看起来很直”……旁友，世界上没有百分百可靠的gay达啊
至於有些網友説的“他看起來很直”……旁友，世界上沒有百分百可靠的gay達啊
zhì yú yǒu xiē wǎng yǒu shuō de “ tā kàn qǐ lái hěn zhí ” ． ． ． ． ． ． páng yǒu ， shì jiè shàng méi yǒu bǎi fēn bǎi kě kào de ｇａｙｄá a
To those netizens saying “he looks straight”... Look, buddy, there is no gaydar that is 100% reliable in this world
Mandarin
如果你没有“Gay达”的话，那只好偷偷观察她的生活细节
如果你沒有“Gay達”的話，那隻好偷偷觀察她的生活細節
rú guǒ nǐ méi yǒu “ ｇａｙｄá ” de huà ， nà zhǐ hǎo tōu tōu guān chá tā de shēng huó xì jié
You can only secretly observe her daily activities if you don't have a “gaydar”