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speculate

verb/ˈspɛk(j)əˌleɪt/

to form ideas about something without having firm evidence

Some early philosophers speculated that curiosity was an instinct that helped humans adapt to new environments by driving them to explore.

theorizehypothesize
word origin — late 16th century: from Latin speculat- ‘observed from a vantage point’, from the verb speculari, from specula ‘watchtower’, from specere ‘to look’

speculate, justify, associate, grasp, infer: meanings and examples

Learn these 5 words from Upper-Intermediate set 64. Each entry includes a definition, example sentence, pronunciation, and synonyms. Use the interactive cards above to practice them.

  1. speculate · verb/ˈspɛk(j)əˌleɪt/

    to form ideas about something without having firm evidence

    Some early philosophers speculated that curiosity was an instinct that helped humans adapt to new environments by driving them to explore.

    Synonyms: theorize, hypothesize

    Origin: late 16th century: from Latin speculat- ‘observed from a vantage point’, from the verb speculari, from specula ‘watchtower’, from specere ‘to look’

  2. justify · verb/ˈdʒəstəˌfaɪ/

    to show or explain why something is reasonable or right

    You will have to justify your decision by giving reasons why it is the best of all the choices.

    Synonyms: explain, rationalize

    Origin: Middle English (in the senses ‘administer justice to’ and ‘inflict a judicial penalty on’): from Old French justifier, from Christian Latin justificare ‘do justice to’, from Latin justus (see just)

  3. associate · verb/əˈsoʊsiˌeɪt/

    to make a logical or causal connection in mind

    Research shows that people associate color black with confidence and intelligence.

    Synonyms: link, relate

    Origin: late Middle English (as a verb in the sense ‘join with in a common purpose’; as an adjective in the sense ‘allied’): from Latin associat- ‘joined’, from the verb associare, from ad- ‘to’ + socius ‘sharing, allied’

  4. grasp · verb/ɡræsp/

    to understand something fully

    We need to examine this experience more closely and look at it from different perspectives to fully grasp its significance.

    Synonyms: understand, comprehend

    Origin: late Middle English: perhaps related to grope

  5. infer · verb/ɪnˈfər/

    to form a conclusion from evidence or clues

    We can infer from the available archaeological evidence that the society in this particular region had so much in common with those of non western Aegean islands.

    Synonyms: deduce

    Origin: late 15th century (in the sense ‘bring about, inflict’): from Latin inferre ‘bring in, bring about’ (in medieval Latin ‘deduce’), from in- ‘into’ + ferre ‘bring’