สนิท

Built from

According to the Royal Institute Dictionary 2011, borrowed from Pali siniddha (“gluey, sticky; smooth, sleek; lovely, pretty; etc.”), ultimately from Sanskrit स्निग्ध (snigdha, “idem”); 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”).

From Wiktionary