Chapter 16 of the NCERT Class 9 Sanskrit textbook "शेमुषी" (Shemushi) is called सन्धि विचार, which means "The Study of Sandhi". सन्धिः literally means "joining" or "union", and विचारः means consideration or study. So सन्धि विचार is the chapter that studies how two sounds join together when two words come side by side. In Sanskrit, when the last sound of one word meets the first sound of the next word, they often combine to form a single new sound. This joining is called सन्धिः. For example, रामः + अस्ति = रामोऽस्ति, and सु + उक्तिः = सूक्तिः. The chapter explains the rules of this joining and divides it into three main types: स्वरसन्धिः (vowel sandhi), व्यञ्जनसन्धिः (consonant sandhi) and विसर्गसन्धिः (visarga sandhi). Understanding sandhi is essential for reading, pronouncing and analysing Sanskrit words correctly. This note explains each type with rules and examples, gives word meanings, and provides quick revision tables, a mind map, SVG diagrams, common mistakes and exam tips.
What is सन्धिः? The word सन्धिः means joining or combination. When two words come together in a sentence, their meeting sounds may combine into one sound. The original two sounds and the new combined sound are both called सन्धिः. Analysing a joined word back into its parts is called विच्छेदः (splitting).
Why is Sandhi Important? Without knowing sandhi, a reader may not recognise the original words. For example, गच्छत्यपि looks like one word, but the sandhi split reveals गच्छति + अपि (goes also). Sandhi knowledge is therefore essential for both reading and translating.
The Three Types of Sandhi. The chapter presents three main types: 1. स्वरसन्धिः (Vowel Sandhi): When a vowel meets another vowel, they may merge. Examples: सु + उक्तिः = सूक्तिः (उ + उ = ऊ); देव + इन्द्रः = देवेन्द्रः (अ + इ = ए); महा + आत्मा = महात्मा (आ + आ = आ). 2. व्यञ्जनसन्धिः (Consonant Sandhi): When a consonant meets a consonant or vowel, the first consonant may change. Example: तत् + जनः = तज्जनः (त् + ज = ज्ज्). 3. विसर्गसन्धिः (Visarga Sandhi): When the visarga (ः) meets a sound, it may change. Examples: नरः + इव = नर इव (visarga disappears); रामः + शरणम् = रामः शरणम्.
How to Split a Sandhi Word. To split, look at the meeting point and try possible splits until the sentence makes sense. Practice with common pairs like च + एव = चैव, इत्यादि = इति + आदि.
| Sanskrit Word | English Meaning |
|---|---|
| सन्धिः | joining, union of sounds |
| विचारः | study, consideration |
| स्वरः | vowel |
| व्यञ्जनम् | consonant |
| विसर्गः | visarga (ः) |
| विच्छेदः | splitting apart |
| संयोगः | combination |
| योगः | union |
| स्वरसन्धिः | vowel sandhi |
| व्यञ्जनसन्धिः | consonant sandhi |
| विसर्गसन्धिः | visarga sandhi |
| पूर्वपदम् | the first word |
| उत्तरपदम् | the following word |
Vowel Sandhi (स्वरसन्धिः): When two vowels meet, Sanskrit has rules to combine them. The most common: अ/आ + इ/ई = ए; अ/आ + उ/ऊ = ओ; अ/आ + ऋ = अर्; अ/आ + ए = ऐ; अ/आ + ओ = औ; अ/आ + अ/आ = आ. Examples: देव + इन्द्रः = देवेन्द्रः; नर + उत्तमः = नरोत्तमः; सूक्तिः = सु + उक्तिः.
Consonant Sandhi (व्यञ्जनसन्धिः): When a consonant ends a word, it often changes when followed by another consonant. Examples: तत् + जनः = तज्जनः; उत् + लिखति = उल्लिखति. The rules vary by the type of consonant.
Visarga Sandhi (विसर्गसन्धिः): The visarga (ः) changes according to the following sound. Before a vowel it often disappears (नरः + इव = नर इव); before some consonants it may become स्, र् or ओ. Examples: दुः + करम् = दुष्करम्; अन्तः + गृहम् = अन्तर्गृहम्; नरः + च = नरश्च.
The Method of Split (विच्छेदः): To split a sandhi word, try the most common vowel pairs first, then check that the sentence meaning is natural. Practice makes the process fast.
सन्धि विचार teaches the value of careful observation and systematic analysis. Just as sounds join beautifully according to rules, disciplined study of language reveals hidden patterns. The chapter shows that Sanskrit is a highly scientific language in which even sound combinations follow precise rules. It also builds the student's ability to analyse — a skill useful in all subjects. Mastery of sandhi leads to correct pronunciation and clear understanding.
| Type | Sounds Meeting | Example | Split |
|---|---|---|---|
| स्वरसन्धिः | vowel + vowel | देवेन्द्रः | देव + इन्द्रः |
| व्यञ्जनसन्धिः | consonant + consonant | तज्जनः | तत् + जनः |
| विसर्गसन्धिः | visarga + sound | दुष्करम् | दुः + करम् |
| First | Second | Result | Example |
|---|---|---|---|
| अ/आ | अ/आ | आ | महा + आत्मा = महात्मा |
| अ/आ | इ/ई | ए | देव + इन्द्रः = देवेन्द्रः |
| अ/आ | उ/ऊ | ओ | नर + उत्तमः = नरोत्तमः |
| अ/आ | ऋ | अर् | प्र + ऋच = प्रर्च |
| उ | उ | ऊ | सु + उक्तिः = सूक्तिः |
| Sanskrit | English |
|---|---|
| सन्धिः | joining of sounds |
| स्वरः | vowel |
| व्यञ्जनम् | consonant |
| विसर्गः | visarga (ः) |
| विच्छेदः | splitting |
| योगः | union |
सन्धि विचार is the scientific study of how sounds join in Sanskrit. When two words meet, their vowels, consonants or visarga combine according to precise rules, creating a single smooth word. The chapter teaches the three types — स्वरसन्धिः, व्यञ्जनसन्धिः and विसर्गसन्धिः — and the skill of विच्छेदः, splitting a joined word back into its original parts. Sandhi knowledge is essential for correct pronunciation, reading and translation. Students who learn the core vowel pairs, practise the three-type classification, master the common splits and always test the meaning will score full marks in the sandhi section of the exam.