Y09W17VC Word Roots — -fid/-feder- (trust/faith)

The root -fid- / -feder- comes from Latin and carries the core meaning of 'trust' or 'faith'. It appears in words related to belief, loyalty, confidence and formal agreements between parties. Understanding this root helps students recognise an important family of terms used in law, politics and everyday formal language. This module explores six Academic Vocab words alongside three further examples in the Word Families section.

Word Families

These three word-family examples show how -fid/-feder- carries the idea of 'trust/faith' into more complex words. Notice how the shared root can help you unlock meaning and use each word more accurately in academic writing.

confident

/ˈkɒnfɪdənt/

con‑fi‑dent

adjective

Feeling or showing certainty about something or belief in one's own abilities; assured.

Word Breakdown: con- (prefix meaning 'with' or 'fully') + -fid- (root meaning 'faith' or 'trust') + -ent (suffix meaning 'characterised by')

Example: A confident argument presents its claims clearly and supports each one with specific, well-chosen evidence.

Synonyms: assured, certain, self-assured

Collocations: feel confident, quietly confident, confident in

federal

/ˈfɛdərəl/

fed‑er‑al

adjective

Relating to a system of government in which power is divided between a central authority and a number of regions or states.

Word Breakdown: -feder- (root meaning 'treaty' or 'league of trust', from Latin foedus meaning 'covenant') + -al (suffix meaning 'relating to')

Example: The federal government retains responsibility for immigration and defence, while education is shared with state governments.

Synonyms: national, central, union-based

Collocations: federal government, federal system, federal policy

fidelity

/fɪˈdɛlɪti/

fi‑del‑i‑ty

noun

Faithfulness or loyalty to a person, cause or set of beliefs; also the accuracy with which something is reproduced.

Word Breakdown: -fid- (root meaning 'faith' or 'trust') + -ity (suffix meaning 'the quality or state of')

Example: A biopic's fidelity to historical fact is always in tension with the need to create a compelling narrative.

Synonyms: faithfulness, loyalty, accuracy

Collocations: historical fidelity, fidelity to the text, high fidelity

Academic Vocab

portray

/pɔːˈtreɪ/

por‑tray

verb | [portray – portrayed – portrayed]

To represent or depict a person, character or situation in a particular way in a text, artwork or performance.

Word family: portrayal (n.), portrait (n.)

Example: The novel portrays the female protagonist not as a victim but as an agent who actively shapes her own fate.

Synonyms: depict, represent, characterise

Collocations: portray as, portray sympathetically, portray realistically

depict

/dɪˈpɪkt/

de‑pict

verb | [depict – depicted – depicted]

To show or represent something or someone in a picture, text or performance.

Word Breakdown: de- (prefix meaning 'from' or 'down', here indicating completion)

Word family: depiction (n.)

Example: The film depicts the lives of working-class families in 1970s Melbourne with unflinching honesty.

Synonyms: portray, show, represent

Collocations: depict reality, depict as, vividly depicted

characterise

/ˈkærɪktəraɪz/

char‑ac‑ter‑ise

verb | [characterise – characterised – characterised]

To describe or define the distinctive qualities of something; to portray a person in a particular way.

Word family: characterisation (n.), character (n.)

Example: Critics have characterised the government's response as inadequate given the scale of the humanitarian crisis.

Synonyms: describe, define, portray

Collocations: characterise as, characterise the argument, typically characterise

construct

/kənˈstrʌkt/

con‑struct

verb | [construct – constructed – constructed]

To build or create something deliberately, especially an idea, argument or representation.

Word family: construction (n.), constructed (adj.)

Example: Gender is not innate but socially constructed through language, media representation and cultural norms.

Synonyms: build, create, develop

Collocations: construct an argument, socially constructed, construct meaning

represent

/ˌrɛprɪˈzɛnt/

rep‑re‑sent

verb | [represent – represented – represented]

To act or speak on behalf of someone; or to depict and portray something or someone in a particular way.

Word family: representation (n.), representative (adj.)

Example: Literature has historically failed to represent the diversity of experience within Australian communities.

Synonyms: depict, portray, stand for

Collocations: represent fairly, represent a group, misrepresent

this is evident in

/ðɪs ɪz ˈɛvɪdənt ɪn/

this is ev‑i‑dent in

phrase

Used in academic writing to signal that the point being made can be seen or supported by a specific example.

Example: The author consistently privileges the dominant culture's perspective; this is evident in the language used to describe non-Western characters.

Synonyms: as seen in, this can be seen in, this is demonstrated by

Collocations: this is evident in the way, this is evident throughout, this is particularly evident in

Confusing Words

firstly vs in the first instance vs to begin

These sequence markers all introduce an early point, but they suit different levels of formality.

  • firstly — Firstly' marks the first point in a list or argument; for example, 'Firstly, the policy is expensive.'
  • in the first instance — In the first instance' is more formal and often means as the first step; for example, 'In the first instance, the school should review its policy.'
  • to begin — To begin' is a clear opening phrase that introduces the first idea; for example, 'To begin, the evidence must be examined carefully.'

Memory rule: Use 'firstly' for ordered points, 'in the first instance' for formal first steps and 'to begin' for a clear opening move.