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Vocabulary

Last Updated : 9 Mar, 2026

Vocabulary is the set of words we know and use while speaking, reading, writing, and understanding a language. In English, building a good vocabulary helps us communicate clearly and understand ideas more easily.

Rules for Building Vocabulary

Understanding vocabulary is important for solving verbal ability questions. Instead of memorizing meanings, it is better to use logical techniques to understand words. The following rules help in identifying the correct meaning of unfamiliar words.

1. Use the Context First Rule

The meaning of a word should never be decided in isolation. Always understand the context of the sentence.

Example: The judge was lenient with the offender.

Here, the context is related to punishment, so lenient means not strict.

2. Use Prefix, Root, and Suffix

Break unfamiliar words into smaller parts to understand their meaning.

Some Common Prefixes:

PrefixMeaning
antiagainst
benegood
malbad
prebefore
postafter

Some Common Suffixes:

SuffixMeaning
-ologystudy of
-phobiafear
-lesswithout

Example: Benevolent = bene (good) + volent (wishing) → kind

3. Beware of Confusing Word Pairs

Some words look similar but have different meanings. Understanding these differences prevents common mistakes.

WordMeaning
Affect
Effect
influence (verb)
result (noun)
Eminent
Imminent
famous
about to happen
Accept
Except
receive
exclude

4. Roots Related to Life, Human, and Mind

RootMeaningExamples
biolifebiology, biography
psychmindpsychology
anthrophumananthropology
dempeopledemocracy
animlife/soulanimate, animation
egoselfegoist

5. Roots Related to Study and Knowledge

RootMeaningExamples
logystudy ofbiology
gnosisknowledge, knowingdiagnosis, prognosis
sophwisdomphilosophy
scient

to know, knowledge

science
cognto knowcognition, recognize

6. Roots Related to Speaking and Communication

RootMeaningExamples
dictsaydictate, verdict
loquspeakeloquent, soliloquy
vocvoicevocal, vocation
narrtellnarrate, narrative
scrib / scriptwritedescribe, manuscript

7. Roots Related to Seeing & Perception

RootMeaningExamples
vis / vidseevision, evident
spectlookinspect, perspective
opticeyeoptical, optician
scopwatchmicroscope, telescope

8. Roots Related to Movement & Direction

RootMeaningExamples
mot / movmovemotion, promote
grad / gressstepprogress, gradual
portcarrytransport, export
pedfootpedestrian, impede
vertturnreverse, convert

9. Roots Related to Time & Order

RootMeaningExamples
chrontimechronology, chronic
temptimetemporary, temporal
primfirstprimary, primitive
postafterpostpone, postwar
prebeforepredict, preview

10. Roots Related to Power, Force & Control

RootMeaningExamples
dynpowerdynamic, dynamite
potentpowerfulpotent, omnipotent
dominruledominate, domain
archchiefarchitect, monarchy
tyrrulertyrant, tyranny

11. Roots Related to Good & Bad

RootMeaningExamples
benegoodbenefit, benevolent
malbadmalfunction, malicious
eugood / welleuphoria, euthanasia
miswrongmistake, misjudge
nocharmnoxious, innocent

12. Roots Related to Size, Number & Measure

RootMeaningExamples
magnlargemagnify, magnitude
minismallminiature, minimal
multimanymultiple, multiply
unioneuniform, unilateral
polymanypolygon, polyglot

13. Roots Related to Feelings & Emotions

RootMeaningExamples
pathfeelingsympathy, apathy
phillovephilosophy, philanthropist
phobfearphobia, claustrophobia
irascangerirascible

14. Roots Related to Nature & Science

RootMeaningExamples
geoearthgeography, geology
hydrowaterhydrogen, hydrology
thermoheatthermometer, thermal
astrostarastronomy, astronaut
aeroairaerospace, aerobic

15. Roots Related to Form & Structure

RootMeaningExamples
formshapereform, transform
structbuildconstruct, structure
morphformmorphology, amorphous
typmodelprototype, typical

16. Roots Related to Law, Governance & Society

RootMeaningExamples
jurlawjustice, jurisdiction
civcitizencivil, civilization
politstatepolitics, policy
leglawlegal, legislature

Using Root Words to Understand Words

Root words help in understanding the meaning of unfamiliar words during exams. By breaking a word into parts, it becomes easier to identify its meaning.

Follow these simple steps:

  1. Break the word – Divide the word into smaller parts such as prefix, root, and suffix.
  2. Identify the root meaning – Find the basic meaning of the root word.
  3. Check prefix or suffix – Prefixes and suffixes modify the meaning of the root.
  4. Match with sentence context – Finally, understand the meaning based on how the word is used in the sentence.

Example : Indefatigable

  • in = not
  • de = away
  • fatigue = tiredness

Meaning → never tired or having endless energy.

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