| Sr. | Explanation | One Word Substitution |
| 401 | Succession of rulers belonging to one family | Dynasty |
| 402 | Take great pleasure | Revel |
| 403 | Tending to move away from the centre or axis | Centrifugal |
| 404 | That which can be believed | Credible |
| 405 | That which cannot be avoided | Inevitable |
| 406 | That which cannot be called back | Irrevocable |
| 407 | That which cannot be defeated | Invincible |
| 408 | That which cannot be easily read | Illegible |
| 409 | That which is perceptible by touch is | Tangible |
| 410 | That which is without opposition | Unanimous |
| 411 | That which lasts for a short time | Transitory |
| 412 | The absence of law and order | Anarchy |
| 413 | The act of killing a king | Regicide |
| 414 | The act of killing one’s wife | Uxoricide |
| 415 | The act of killing whole group of people, especially a whole race | Genocide |
| 416 | The act of speaking about one’s thoughts when one is alone | Soliloquy |
| 417 | The action of looking within or into one’s own mind | Introspect |
| 418 | The art of delaying | Procrastination |
| 419 | The art of making maps and charts | Cartography |
| 420 | The art of preserving skin of animals, birds and fish | Taxidermy |
| 421 | The branch of medical science which deals with the problems of the old | Geriatrics |
| 422 | The conference that takes place once in three year | Triennial |
| 423 | The doctrine that human souls pass from one body to another at the time of death | Transmigration |
| 424 | The essential or characteristic customs , habits and conventions of a society or community | Mores |
| 425 | The firing of many guns at the same time to mark an occasion | Fusillade |
| 426 | The first model of a new device | Prototype |
| 427 | The first public speech delivered by a person | Maiden speech |
| 428 | The first speech made by a person | Maiden |
| 429 | The height of object above sea level | Altitude |
| 430 | The line where the land and sky seems to meet | Horizon |
| 431 | The murder of parents or near relative | Parricide |
| 432 | The part of government which is concerned with making of rules | Legislature |
| 433 | The plant and vegetation of a region | Flora |
| 434 | The policy of extending a country’s empire and influence | Imperialism |
| 435 | The practice of having many wives | Polygamy |
| 436 | The practice of submitting a proposal to popular vote | Referendum |
| 437 | The practice or art of choosing, cooking, and eating good food | Gastronomy |
| 438 | The process by which a person or an organization reduces the amount of money it spends | Budgeting |
| 439 | The process by which plants and animals breathe | Respiration |
| 440 | The process of deciding the nature of disease by examination | Diagnosis |
| 441 | The production of raw silk | Sericulture |
| 442 | The quality of being politely firm and demanding | Assertive |
| 443 | The scientific study of elections | Psephology |
| 444 | The study of ancient civilization | Archaeology |
| 445 | The study of birds | Ornithology |
| 446 | The study of plant life | Botany |
| 447 | The study of religion and religious ideas and beliefs | Theology |
| 448 | The study of the origin and history of words | Etymology |
| 449 | The study of worms and insects | Entomology |
| 450 | The study or collection of coins | Numismatics |
