- GCSE
- g'day
- Gdns.
- GDP
- GDR
- gear
- gear change
- gear lever
- gear stick
- gear wheel
- gearbox
- gearing
- gearknob
- gecko
- gee
- gee up
- gee-gee
- geek
- geeky
- geezer
- Geiger counter
- geisha girl
- gel
- gel
- gelatin
- gelatinous
- gelation
- geld
- gelding
- gelid
- gelignite
- gem
- geminate
- gemination
- Gemini
- gemma
- gemmology
- gemstone
- gen.
- Gen.
- gen
- gender
- gender reassignment
- gender-bender
- gender-specific
- gene
- gene flow
- gene frequency
- gene pool
- genealogical
- genealogical tree
- genealogist
- genealogy
- general
- General Agreement on Tariffs and Trade
- general anaesthetic
- general assembly
- general degree
- general delivery
- general election
- general headquarters
- general hospital
- general knowledge
- general manager
- general meeting
- general officer
- General Post Office
- general practice
- general practitioner
- general staff
- general store
- general strike
- General Studies
- General Synod
- generalissimo
- generalist
- generality
- generalization
- generalize
- generalized
- generally
- general-purpose
- generalship
- generate
- generating station
- generating unit
- generation
- generation gap
- generative
- generative grammar
- generative semantics
- generator
- generatrix
- generic
- generically
- generosity
- generous
- generously
- genesis
- genet
- genetic
- genetic code
- genetic engineer
- genetic engineering
- genetic fingerprinting
- genetically
- geneticist
- genetics
- Geneva
- Geneva Convention
- Genevan
- gengineer
- gengineering
- genial
- geniality
- genially
- genie
- genii
- genital
- genitalia
- genitival
- genitive
- genito-urinary
- genius
- Genoa
- genocidal
- genocide
- genome
- genomics
- genotype
- genre
- gent
- genteel
- gentian
- gentian blue
- gentian violet
- Gentile
- gentility
- gentle
- gentlefolk
- gentleman
- gentleman farmer
- gentleman-at-arms
- gentleman-in-waiting
- gentlemanly
- gentleman's gentleman
- gentlemen's agreement
- gentlemen's club
- gentleness
- gentlewoman
- gently
- gentrification
- gentrified
- gentrify
- gentry
- genuflect
- genuflection
- genuine
- genuinely
- genus
- geocentric
- geochemical
- geochemist
- geochemistry
- geode
- geodesic
- geodesic dome
- geodesy
- geodynamics
- geographer
- geographical
- geographical mile
- geographically
- geography
- geological
- geologically
- geologist
- geology
- geomagnetic
- geomagnetism
- geomarketing
- geometer
- geometric
- geometric mean
- geometric progression
- geometric series
- geometrical
- geometrically
- geometrician
- geometry
- geomorphic
- geomorphology
- geophysical
- geophysicist
- geophysics
- geopolitical
- geopolitics
- Geordie
- George
- George Cross