ครับ

khrap · RTGS: khnap

falling
Tone
Initial
Class
Low-class
Mark
None
Syllable
dead
Tone Rule
Low + Dead (long) = Falling
Why falling tone?

Low-class consonants in dead syllables with long vowels produce Falling tone.

What is a dead syllable?

Dead syllable with long vowel (ends with a stop consonant)

About Low-class consonants

Low-class consonants include ค, ฅ, ฆ, ง, ช, ซ, ฌ, ญ, ฑ, ฒ, ณ, ท, ธ, น, พ, ฟ, ภ, ม, ย, ร, ล, ว, ฬ, and ฮ. In live syllables without a tone mark, they produce a mid tone. They behave differently with tone marks compared to mid and high-class consonants.