ลง

From Proto-Tai *n̩.loŋᴬ (“to descend”). Cognate with Northern Thai ᩃᩫ᩠ᨦ, Lao ລົງ (long), Lü ᦟᦳᧂ (lung), Tai Dam ꪶꪩꪉ, Shan လူင်း (lúung), Tai Nüa ᥘᥨᥒᥰ (löng), Ahom 𑜎𑜤𑜂𑜫 (luṅ), Zhuang roengz.

ลง • (long) (abstract noun การลง)

1. (ambitransitive)
   1. to come down; to get down; to descend
   2. to cause to do so
2. (ambitransitive, as of a vehicle)
   1. to get on; to embark; to enter; to board
   2. to get off; to disembark; to depart; to leave
3. (intransitive) to lower; to decrease; to reduce; to lessen; to mitigate
4. (transitive) to put down; to place down
5. (transitive) to apply (to put to use)
6. (transitive, of a punishment) to inflict, to impose; to execute, to carry out
7. (transitive) to make (an entry in a register); to record; to register; to note down; to write down
8. (transitive) to publish
9. (intransitive) to yield (to give up to a superior power or authority)
10. (intransitive) to end
11. (transitive, colloquial, computing) to install

ลง • (long)

1. down; downwards
2. south; southwards
3. (often in negative senses) more (in or to a greater extent or degree)
4. used to indicate the state of having enough insensitivity to do something: to have the heart (to do something); to be able to bring oneself (to do something); to have enough courage (to do something)

• “ลง” 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.