สนิท

From Pali siniddha (“gluey, sticky; smooth, sleek; lovely, pretty; etc”), ultimately from Sanskrit स्निग्ध (snigdha, “idem”), according to the Royal Institute Dictionary 2011; but more likely to be from Old Khmer ត្និត៑ (tnit, “close; intimate”) or from Sanskrit सनीड (sanīḍa, “close; closely united or related; etc”).

Compare Modern Khmer ស្និទ្ធ (snət, “close, intimate; beloved, dear”).

สนิท • (sà-nìt) (abstract noun ความสนิท)

1. (of personal relations) close; intimate.

   เพื่อนสนิท

   pʉ̂ʉan sà-nìt

   close friend

   ญาติสนิท

   yâat sà-nìt

   close relative

สนิท • (sà-nìt) (abstract noun ความสนิท)

1. closely; tightly; firmly; securely.

   ประตูปิดไม่สนิท

   bprà-dtuu bpìt mâi sà-nìt

   (literally) The door is not closed tight.

2. well: often used to describe the condition of being or becoming one.

   สองสีเข้ากันสนิท

   sɔ̌ɔng sǐi kâo gan sà-nìt

   The two colours match each other well.

3. completely, totally; only, solely.

   ตายสนิท

   dtaai sà-nìt

   completely dead

   บอดสนิท

   bɔ̀ɔt sà-nìt

   fully blind

   จืดสนิท

   jʉ̀ʉt sà-nìt

   purely insipid

   ลืมสนิท

   lʉʉm sà-nìt

   to completely forget