1. Features of English Vocabulary

English vocabulary is shaped by its history, contact with other languages, and linguistic structure.

1.1. Mixed Origin

English is a Germanic language at its core, but it has absorbed a massive amount of vocabulary from Latin, French, Greek, and many others.

• Germanic origin: everyday words, core grammar — house, water, eat, drink, child
• French/Latin origin: abstract, academic, or formal terms — government, justice, information, liberty
• Greek origin: science and technology — biology, telephone, democracy

1.2. Synonymy from Multiple Sources

Borrowings have created multiple words for similar concepts:

• kingly (Old English) vs. royal (French) vs. regal (Latin)
• ask (OE) vs. question (French) vs. interrogate (Latin)

Often, native words feel more casual while Latin/French ones sound formal.

1.3. Productivity

English vocabulary grows quickly due to:

• Compounding (toothbrush, website)
• Affixation (unhappiness, preheat)
• Blending (brunch, smog)
• Borrowing (piano from Italian, emoji from Japanese)

1.4. Polysemy and Flexibility

Many English words have multiple meanings:

• light → “not heavy” / “illumination”
• run → over 40 distinct meanings in modern English

1.5. Open vs. Closed Classes

• Open-class words (nouns, verbs, adjectives, adverbs) → easily admit new members (selfie, google as a verb)
• Closed-class words (pronouns, conjunctions, prepositions) → rarely gain new members (and, in, she)

2. Morphological Structure of English Vocabulary

Morphology = study of word structure (morphemes: smallest units of meaning).

2.1. Morpheme Types

• Free morphemes: can stand alone (book, run, happy)
• Bound morphemes: cannot stand alone; must attach to another word.
• Prefixes: un-happy, re-write
• Suffixes: teach-er, happi-ness
• Infixes (rare in English; sometimes in slang): un-flippin’-believable

2.2. Word Formation Processes

1. Derivation — Adding prefixes/suffixes to create a new word or change the word class.
   happy (adj.) → happiness (noun) → unhappiness (noun, negative)
   read (verb) → readable (adj.)
2. Inflection — Adding endings to express grammatical features (tense, number, comparison).
   Verb tense: walk → walked (past)
   Plural: cat → cats
   Comparative: big → bigger
3. Compounding — Combining two or more free morphemes.
   blackboard, credit card, laptop
4. Blending — Merging parts of two words.
   breakfast + lunch → brunch
   smoke + fog → smog
5. Clipping — Shortening a longer word without changing meaning.
   advertisement → ad
   telephone → phone
6. Acronyms & Initialisms —
   Acronym: pronounced as a word (NASA, UNICEF)
   Initialism: pronounced letter by letter (BBC, FBI)
7. Borrowing — Taking words directly from other languages.
   kindergarten (German), sushi (Japanese), ballet (French)
8. Conversion (Zero Derivation) — Changing the word class without altering the form.
   Noun → Verb: to email, to google
   Verb → Noun: a run, a call

2.3. Morphological Analysis Example

Word: unbelievableness

• Prefix: un- (negative)
• Root: believe (verb)
• Suffix 1: -able (adjective-forming)
• Suffix 2: -ness (noun-forming)

Meaning: “the quality of not being believable”

3. Putting It All Together

English vocabulary is:

• Historically layered (Germanic core + Romance overlay + Greek/other imports)
• Morphologically versatile (affixation, compounding, conversion, borrowing)
• Continuously expanding through creativity and technology