From บรม (bɔɔ-rom, “great; supreme; utmost; etc”) + ราชาธิราช (“king of kings”); ultimately from Sanskrit परम (parama, “absolute; supreme; utmost; etc”) + राजाधिराज (rājādhirāja, “king of kings”), probably via Old Khmer paramarājādhirāja, pūrammarājjādhirāja (“supreme overlord of kings”). Compare Modern Khmer បរមរាជាធិរាជ (bârômréachéathĭréach).
Historian Sujit Wongthes (สุจิตต์ วงษ์เทศ) suggested that the term was created after the legendary leader Borom.[1]
| Orthographic | บรมราชาธิราช ɓ r m r ā d͡ʑ ā dʰ i r ā d͡ʑ | ||
| Phonemic | บอ-รม-รา-ชา-ทิ-ราด ɓ ɒ – r m – r ā – d͡ʑ ā – d i – r ā ɗ | บอ-รม-มะ-รา-ชา-ทิ-ราด ɓ ɒ – r m – m a – r ā – d͡ʑ ā – d i – r ā ɗ | |
| Romanization | Paiboon | bɔɔ-rom-raa-chaa-tí-râat | bɔɔ-rom-má-raa-chaa-tí-râat |
| Royal Institute | bo-rom-ra-cha-thi-rat | bo-rom-ma-ra-cha-thi-rat | |
| (standard) IPA(key) | /bɔː˧.rom˧.raː˧.t͡ɕʰaː˧.tʰi˦˥.raːt̚˥˩/(R) | /bɔː˧.rom˧.ma˦˥.raː˧.t͡ɕʰaː˧.tʰi˦˥.raːt̚˥˩/(R) | |
บรมราชาธิราช • (bɔɔ-rom-raa-chaa-tí-râat)