ได้

• (obsolete) ใด้ (dâi), ใด้ย

From Proto-Tai *ɗajꟲ (“to obtain”). Cognate with Lao ໄດ້ (dai), Northern Thai ᨯᩱ᩶, Lü ᦺᦡᧉ (ḋay²), Shan လႆႈ (lāi), Tai Dam ꪼꪒ꫁, Zhuang ndaej. Compare Sui qdyais (“to get, to obtain”), Southern Kam lis (“to get”), Proto-Hlai *ɗɯː (“to get”).

Simpson (2001) suggests that it ultimately comes from the Middle Chinese 得 (MC tok), which was used to mean "can" at the end of a sentence, as in Thai.

ได้ • (dâai) (abstract noun การได้)

1. to get; to obtain; to receive.

   อยากได้รางวัลชนะเลิศ

   yàak dâai raang-wan chá-ná-lə̂ət

   [I] want to get the first prize.

2. (auxiliary) used before a verb to indicate that one has done or has an opportunity to do the action.

   ได้ไปพูดกับเขาแล้ว แต่เขาไม่ฟัง

   dâai bpai pûut gàp kǎo lɛ́ɛo · dtɛ̀ɛ kǎo mâi fang

   I've already talked to them, but they didn't listen.

   ถ้าได้เป็นคนดังก็คงจะดี

   tâa dâai bpen kon dang gɔ̂ kong jà dii

   If I could be a famous person, it would be great.

3. (auxiliary) used after a verb to express that the action can be or has been done.

   ฝนตกหนักแบบนี้ ขี่มอไซค์ออกไปได้เหรอ

   fǒn dtòk nàk bɛ̀ɛp níi · kìi mɔɔ-sai ɔ̀ɔk bpai dâai rə̌ə

   Can you really ride a motorcycle in heavy rain like this?

ได้ • (dâai)

1. used to express a range of emotions, including acceptance, agreement, permission, anger, reproof, resignation, etc.

• “ได้” in Thai Dictionary Project (TDP) (UC Berkeley 1964) (plus additional data from the Royal Institute of Thailand (RI) and NECTEC's LEXITRON project (LEX)). Searchable online at SEAlang.net.