Y07W01VC Word Roots — -log / -logue- (word / reason)

The root ‑log‑ / ‑logue‑ comes from Greek and carries the core meaning of ‘word’ or ‘reason’. It appears in words connected to speech, language, and systematic thinking across science, literature, and everyday life. Understanding this root unlocks the meaning of many academic and formal English words. This module explores six such words drawn from the Academic Vocab list, plus three further examples in the Word Families section.

Word Families

These three words all connect to the root -log / -logue-. As you read, notice how the meaning 'word / reason' helps you unlock each word and use it more accurately.

dialogue

/ˈdaɪ.ə.lɒɡ/

di‑a‑logue

noun

A conversation between two or more people, or the written representation of such a conversation in a text.

Word Breakdown: dia– (prefix meaning ‘across’ or ‘between’)

Example: The author used dialogue between the two characters to reveal their very different views on justice.

Synonyms: conversation, exchange, discussion

Collocations: open a dialogue, written dialogue, engage in dialogue

logic

/ˈlɒdʒ.ɪk/

log‑ic

noun

A system of careful reasoning used to reach a conclusion, or the quality of being clear and consistent in the way ideas are connected.

Example: The scientist applied logic to eliminate every explanation that the data could not support.

Synonyms: reasoning, rationale, sense

Collocations: apply logic, follow the logic, flawed logic

monologue

/ˈmɒn.ə.lɒɡ/

mon‑o‑logue

noun

A long speech delivered by one person, either in real life, as part of a dramatic performance, or as a character’s inner thoughts in a text.

Word Breakdown: mono– (prefix meaning ‘one’ or ‘single’)

Example: The actor delivered a powerful monologue that kept the entire audience completely silent.

Synonyms: speech, soliloquy, address

Collocations: deliver a monologue, dramatic monologue, inner monologue

Academic Vocab

analyse

/ˈæn.ə.laɪz/

an‑a‑lyse

verb | [analyse – analysed – analysed]

To examine something carefully, breaking it into parts in order to understand it or identify patterns and meaning.

Word Breakdown: –lyse (suffix meaning ‘to break apart or examine closely’)

Word family: analysis ( n. ), analytical ( adj. ), analyst ( n. )

Example: The students were asked to analyse the author’s use of language in the opening paragraph.

Synonyms: examine, investigate, assess

Collocations: analyse data, analyse a text, analyse results

method

/ˈmeθ.əd/

meth‑od

noun

A particular way of doing something, especially one that is organised, planned, or established through repeated use.

Word family: methodical ( adj. ), methodology ( n. ), methodically ( adv. )

Example: The class discussed which method was most reliable for testing the effect of sunlight on plant growth.

Synonyms: approach, technique, procedure

Collocations: scientific method, research method, teaching method

data

/ˈdeɪ.tə/

da‑ta

noun (plural)

Facts, figures, or information collected through observation, testing, or research, and used as the basis for analysis or decision-making.

Word family: datum ( n. — singular form), database ( n. )

Example: The researchers collected data from over three hundred students across five different schools.

Synonyms: information, statistics, figures

Collocations: collect data, analyse data, data set

research

/rɪˈsɜːtʃ/

re‑search

noun, verb | [research – researched – researched]

The careful study of a subject, especially in order to discover new facts, test ideas, or reach a deeper understanding.

Word family: researcher ( n. ), research-based ( adj. )

Example: She conducted research into the long-term effects of social media use on teenagers’ sleep.

Synonyms: investigation, inquiry, study

Collocations: conduct research, research findings, independent research

policy

/ˈpɒl.ɪ.si/

pol‑i‑cy

noun

A set of rules, principles, or a plan of action that guides decisions and behaviour within an organisation, government, or institution.

Word family: policies ( n. plural), policy-maker ( n. )

Example: The school introduced a new policy that required all students to place their phones in a designated tray during lessons.

Synonyms: guideline, regulation, rule

Collocations: government policy, school policy, introduce a policy

therefore

/ˈðeə.fɔː/

there‑fore

adverb (connecting adverb)

Used to introduce a conclusion, result, or logical consequence that follows directly from what has just been stated.

Example: The experiment produced inconsistent results; therefore, the team decided to repeat the procedure under controlled conditions.

Synonyms: consequently, thus, as a result

Collocations: and therefore, therefore concluded, it therefore follows

Confusing Words

infer vs imply

These two words are commonly confused because both relate to meaning that is not stated directly — yet they describe opposite ends of the same process.

  • imply — imply' means to suggest something without actually stating it. A writer or speaker does the implying — for example, ‘Her silence seemed to imply she disagreed with the decision.’
  • infer — infer' means to draw a conclusion from evidence or from what someone has said or written. A reader or listener does the inferring — for example, ‘From her silence, we can infer that she disagreed.’

Memory rule: A simple way to keep them apart: the speaker or writer implies, while the reader or listener infers. If you are the one putting meaning in, you imply; if you are the one taking meaning out, you infer.