Vocabulary refers to the total set of words a person knows and uses in a language.

In BPSC TRE 4.0, vocabulary questions test your ability to understand word meanings, synonyms, antonyms, one-word substitutions, and idioms & phrases.

Strong vocabulary helps in comprehension passages, fill-in-the-blanks, and error spotting sections.

Think of vocabulary as the building blocks of language — the more blocks you know, the better you communicate and score.

Synonyms are words with the same or similar meaning.

• ›Happy → Joyful, Elated, Content
• ›Big → Large, Enormous, Vast

Antonyms are words with opposite meanings.

• ›Happy → Sad, Miserable
• ›Big → Small, Tiny

Exam tip: BPSC often uses contextual synonyms — the synonym that fits the sentence's tone, not just any synonym from a dictionary. Always read the full sentence before choosing.

One-Word Substitution = replacing a long phrase with a single word.

Common examples:

• ›A person who cannot die → Immortal
• ›Fear of water → Hydrophobia
• ›One who walks in sleep → Somnambulist
• ›Study of birds → Ornithology
• ›A place where bees are kept → Apiary

These are direct memory-based questions — the most predictable type in BPSC English section. Learn 20–30 common substitutions.

Idioms are fixed phrases where the meaning is not literal.

• ›Break the ice → Start a conversation
• ›Burn the midnight oil → Work late into the night
• ›A blessing in disguise → Something good that seemed bad

Phrases are word groups that carry a specific meaning:

• ›Look after → Take care of
• ›Give up → Abandon or stop

In BPSC, idiom questions ask the correct meaning from 4 options — wrong options usually give the literal meaning as a trap.

Points to Remember

• ›Synonym — same/similar meaning; always check context
• ›Antonym — opposite meaning
• ›One-Word Substitution — single word for a phrase; memory-based
• ›Idiom — fixed phrase, non-literal meaning
• ›Hydrophobia — fear of water (not hatred of water)
• ›Somnambulist — sleepwalker
• ›Ornithology — study of birds
• ›Apiary — place where bees/honey is kept
• ›Exam tip: For synonyms, always eliminate options that don't fit the sentence tone — BPSC tests contextual fit, not dictionary listing.
• ›Exam tip: The trap in idiom questions is choosing the literal meaning — e.g., "Burn the midnight oil" does NOT mean setting oil on fire.