Sandhi: Basic Rules
Sandhi ("joining") is what happens at the seam where two words meet in continuous speech or verse — sounds shift, merge, or drop to make the join easier to pronounce. You've already met three examples without the term being used; this lesson names the pattern and gives you two more.
What You Already Know
Lesson 3 already taught you one sandhi rule without the label: the prefix saṃ- spells its niggahīta as plain m before a labial consonant.
This lesson adds the other two patterns you saw in Lesson 10's worked example without a full explanation at the time.
Rule 1: Vowel Elision
When a word ending in a short vowel is immediately followed by a word beginning with a vowel, the first word's final short vowel is simply dropped, and the words fuse into one written unit.
This is exactly the contraction inside Sīlaniddesa's seven-question matrix that Lesson 10 flagged but didn't yet explain: kāni (Lesson 10's neuter plural interrogative) loses its final -i before assa ("its"), leaving kānassa, "what [are] its...".
Rule 2: The Quotative Contraction (-ṃ + iti → -nti)
Pāli closes a direct quotation with the indeclinable iti, "thus" — functionally Pāli's own closing quotation mark, glossed simply as "..., [end quote]." When the word immediately before iti ends in the niggahīta ṃ, the two contract into -nti.
This is precisely the ending of the last of Sīlaniddesa's seven questions, which Lesson 10 glossed by meaning ("what is its cleansing?") without pausing on its spelling. You can now see the mechanism: kiṃ vodānaṃ, "what [is its] cleansing," plus the closing iti, contracts to kiṃ vodānanti.
Once you can spot this pattern, a huge share of Pāli prose becomes easier to parse at a glance: almost any word ending unexpectedly in -nti at the close of a clause — where you might otherwise expect a 3rd-person-plural verb, the ending Lesson 11 taught for passanti — is worth double-checking as possibly this quotative contraction instead. Context (is there a quotation being closed?) tells you which.
Practice: Undoing the Sandhi
For each contracted form, name the two original words it was built from.
- sampajāna (clearly comprehending)
- kimānisaṃsaṃ (from Lesson 10's worked example)
- sīlanti (closing a quotation about virtue)
Check your answers
1. saṃ + pajāna — niggahīta assimilating to m before the labial p, exactly like saṃ+buddha in Lesson 3.
2. kiṃ + ānisaṃsaṃ — vowel elision is not actually needed here since kiṃ ends in niggahīta, not a vowel; this is niggahīta-before-vowel behavior, a close cousin of Rule 1 worth simply recognizing rather than deriving.
3. sīlaṃ + iti — the same quotative contraction as vodānanti, this time closing "sīlaṃ" (virtue).
Continuing From Here
Lessons 16 and 17 turn to compounds (samāsa) — how Pāli fuses two or more words into one long unit, and how to take one apart on sight. You already know one compound's structure without realizing it: Lesson 1's kammaṭṭhāna is built from exactly the pattern Lesson 16 opens with.