Important One Word Substitution Beginning with O

By Naveen Singh|Updated : May 22nd, 2020
One word substitution is one of the most important parts of English section in CDS, Air Force Group X & Y, Territorial Army & other defence exams. In order to make it easy for all the aspirants, we have already posted Idioms & Phrases

Important One Word Substitution Beginning with O

WordMeaning in HindiMeaning in English
ObstetricianदाईOne expert in the delivery of women
Osteologyस्थि विज्ञानA branch of medical science that deals with study of bones
Oculistनेत्र-विशेषज्ञOne skilled in the disease of eyes
Oligarchyकुलीनतंत्रrule or government by a small group of people
Obsoleteअप्रचलितOut of use
Omniscientसर्वज्ञOne who knows everything
OrphanageअनाथालयAn institution for the shelter of orphans
.OrphanअनाथA child whose parents died
Orthodoxरूढ़िवादीA person holding conversational belief especially in matter of religion
Omnipotentसर्वशक्तिमानOne who has great power and most powerful
Opaqueअपारदर्शीNot able to be seen through; not transparent
OptimistआशावादीAn optimist is someone who always sees the bright side of any situation
OathशपथSolemn undertaking with God’s help to do something
Outridersपूलिस का आदमीPolicemen riding on motorcycles as guards

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If you have missed out on the earlier one-word substitution articles then you can check them:

One Word Substitution from A - Z for Defence Exams

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