Here are some one word substitutions asked in various SSC exams.

Sl.Sentence or Phrase SubstitutionHindi Meaning
1One who has become dependent on something or drugsAddictव्यसनी
2One who opposes war or use of military forcePacifistशांतिवादी
3One not concerned with right or wrongAmoralनीतिहीन
4One who is indifferent to pleasure or painStoicउदासीन,अडिग
One who believes in offering equal opportunities to women in all spheresFeministनारीवादी
One who studies election trend by means of opinion pollsPsephologistचुनाव विश्लेषक
One who can think about the future with imagination and wisdomVisionaryकल्पित
One who can walk on ropes (tightrope walker)Funambulistनट
9One who hates mankindMisanthropeमानवद्वेषी
10One who goes to settle in another countryEmigrantप्रवाशी
11One who collects coinsNumismatistमुद्रा संग्राहक
12One who believes in no government and therefore incites disorder in a stateAnarchistअराजकतावादी
13One who secretly listens to talks of othersEavesdropperछिपकर सुननेवाले
14One who is beyond reformsIncorrigibleअसंशोधनीय
15One who stays away from school without permissionTruantआवारा
16One who believes in that gaining pleasure is the most important thing in lifeHedonistसुखवादी
17One who is greedy for eatingVoraciousपेटू
18One who intervenes between two or more parties to settle differenceIntermediaryमध्यस्थ
19One who deserts his principle or believesRenegadeपाखंडी
20One who breaks the established traditions and imageIconoclastप्रतिमा भंजक
21One who does not follow the usual way of lifeBohemian रूढवाद से मुक्त
22One who has obstinate and narrow religious viewsBigot कट्टरता
23One who loves booksBibliophile पुस्तक प्रेमी
24One who walks in sleepSomnambulist नींद में चलनेवाले
25One who journeys from place to placeItinerant भ्रमणकारी
26One who breaks the lawTransgressor पापी
27One who criticizes popular beliefs which he thinks is mistaken or unwiseIconoclast प्रतिमा भंजक
28One who is a citizen not of a country but of the worldCosmopolitan सर्वदेशीय
29One who tends to take a hopeful view of a lifeOptimist आशावादी
30One who compiles a dictionaryLexicographer कोषकार
31One who finds nothing good in anythingCritic आलोचक
32One who eats human fleshCannibal नरभक्षक
33One who hates womenMisogynist नारी द्वेषी
34One who has narrow and prejudiced religious viewsFanatic कट्टर
35One who practices one of fine artsArtist कलाकार
36One who does not makes mistakesInfallible अचूक
37One who eats both vegetables and meatOmnivorous सर्वभक्षी
38One who gains benefits from somethingBeneficiary लाभार्थी
39One who speaks for othersSpokesman प्रवक्ता
40One who scientifically studies the birdsOrnithologist पक्षी विज्ञानी
41One who is out to destroy the GovernmentAnarchist 
42One who performs daring gymnastics featsAcrobat 
43One whose motive is merely to get moneyMercenary 
44One who is unable to pay one’s debtBankrupt 
45One who loves or supports his or her country and is willing to defend itPatriot 
46One who eats too muchGlutton 
47One who knows everythingOmniscient 
48One who is all powerfulOmnipotent 
49One who enjoys inflicting pain on himselfMasochist 
50One who thinks or speaks too much of himselfEgoist 
 51One who hates womenMisogynist 
52One who lives/survives on others/other livesParasite 
53One who possesses many talentsVersatile 
54One living on vegetablesVegetarian 
55One who lives both on land as well as in waterAmphibian 
56One who is always doubtingSceptic 
57One who offers his services of his own freewillVolunteer 
58A person who repairs broken window-glassesGlazier 
59A person who works for an employer for a fixed period of time in order to learn the particular skills needed in their jobApprentice 
60A Person believing in free willLibertarian 
61A man knows a lot about things like food, music and artConnoisseur 
62One who believes everything he/she hearsCredulous