Y06W29VC Word Roots — -terr- (earth / land)
The root -terr- comes from Latin and means 'earth' or 'land'. It appears in words that relate to land, territory, soil and the physical environment. Understanding -terr- helps students decode unfamiliar words in geography, history, science and formal writing. This module explores six key academic words built with this root alongside three Word Families examples.
Word Families
These three words all contain -terr-. As you read, notice how the meaning 'earth / land' helps you work out each word.
territory
/ˈterɪtəri/
ter‑ri‑to‑ry
noun
An area of land under the control of a particular authority, animal or group.
Word Breakdown: -terr- (root meaning 'earth / land')
Example: Many animal species will defend their territory aggressively when other animals attempt to enter.
Synonyms: area, region, domain
Collocations: claim territory, defend territory, uncharted territory
terrain
/təˈreɪn/
ter‑rain
noun
A stretch of land with particular physical features, such as mountains, valleys or plains.
Example: The expedition team trained extensively before crossing the rugged terrain of the mountain range.
Synonyms: landscape, ground, land
Collocations: rough terrain, mountainous terrain, navigate the terrain
territorial
/ˌterɪˈtɔːriəl/
ter‑ri‑to‑ri‑al
adjective
Relating to territory; also used to describe behaviour in which an animal or group defends its area.
Example: Magpies are known for their territorial behaviour during nesting season, often swooping at passers-by.
Synonyms: defensive, possessive, protective
Collocations: territorial behaviour, territorial dispute, a territorial animal
Academic Vocab
maintain
/meɪnˈteɪn/
main‑tain
verb | [maintain – maintained – maintained]
To keep something in its current state; to continue to have or do something.
Word family: maintain (v.), maintenance (n.)
Example: It takes consistent effort to maintain a high standard of writing throughout a lengthy argument.
Synonyms: keep, uphold, sustain
Collocations: maintain a standard, maintain focus, maintain balance
sustain
/səˈsteɪn/
sus‑tain
verb | [sustain – sustained – sustained]
To keep something going over a long period; to support or maintain something through time.
Word family: sustain (v.), sustainable (adj.), sustainability (n.)
Example: The community worked together to sustain the local wetland habitat through a decade of restoration efforts.
Synonyms: maintain, support, preserve
Collocations: sustain growth, sustain effort, sustain a community
preserve
/prɪˈzɜːv/
pre‑serve
verb | [preserve – preserved – preserved]
To protect something from harm, loss or change so that it continues to exist.
Word family: preserve (v.), preservation (n.)
Example: Conservationists work to preserve endangered habitats from urban development and pollution.
Synonyms: protect, conserve, maintain
Collocations: preserve the environment, preserve for future generations, preserve a record
protect
/prəˈtekt/
pro‑tect
verb | [protect – protected – protected]
To keep something or someone safe from harm or damage.
Word family: protect (v.), protection (n.), protective (adj.)
Example: Marine parks are established to protect coral reefs and the species that depend on them.
Synonyms: defend, safeguard, shield
Collocations: protect from harm, protect the environment, protect a species
continue
/kənˈtɪnjuː/
con‑tin‑ue
verb | [continue – continued – continued]
To keep doing something without stopping; to resume after a pause.
Word family: continue (v.), continuous (adj.), continuity (n.)
Example: Scientists continue to monitor sea temperature data in order to track the impact of climate change.
Synonyms: persist, carry on, proceed
Collocations: continue to, continue with, continue despite
in order to
/ɪn ˈɔːdə tuː/
in or‑der to
phrase
‘In order to’ introduces the purpose or goal of an action.
Example: The council planted more trees in order to cool the playground in summer.
Synonyms: so as to, so that, with the aim of
Collocations: in order to improve; in order to understand; in order to protect
Confusing Words
which vs that
Which and that are both relative pronouns, but they are used in different types of clauses. Which introduces a non-defining (or non-restrictive) clause — one that adds extra information but is not essential — for example, 'The report, which she submitted yesterday, was outstanding.' Note that non-defining clauses using 'which' are enclosed by commas.
- which — Which' usually adds extra information or chooses from a known group — for example, 'The library, which is near the hall, closes at four.'
- that — That introduces a defining (or restrictive) clause — one that is essential to the meaning of the sentence — for example, 'The report that she submitted yesterday was outstanding.'
Memory rule: A simple test: if you can remove the clause without losing the essential meaning, use which (and add commas). If removing the clause changes what is being referred to, use that (no commas). In formal Australian English, maintaining this distinction is considered good style.
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