Certainty and Uncertainty

infallible

Adjective

/ɪn.fæ.lə.bəl/ or /in.fā.lē.bēl/

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incapable of making mistakes or being wrong

unequivocal

Adjective

/ʌn.ɪk.wɪ.və.kəl/ or /an.ik.vi.vē.kēl/

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expressing one's ideas and opinions so clearly that it leaves no room for doubt

definitive

Adjective

/dɪ.fɪ.nɪ.tɪv/ or /di.fi.ni.tiv/

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settling an issue authoritatively and leaving no room for further doubt or debate

assurance

noun

/ə.ʃʊ.rəns/ or /ē.shoo.rēns/

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the state of feeling confident, certain, or self-assured about one's abilities, decisions, or actions

tentative

Adjective

/tɛ.nə.tɪv/ or /te.nē.tiv/

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not firmly established or decided, with the possibility of changes in the future

dubious

Adjective

/du.biəs/ or /doo.biēs/

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(of a person) unsure or hesitant about the credibility or goodness of something

alleged

Adjective

/ə.lɛʤd/ or /ē.lejd/

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asserted or claimed to be true, but not yet proven

inconclusive

Adjective

/ɪn.kənk.lu.sɪv/ or /in.kēnk.loo.siv/

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not producing a clear result or decision

hesitant

Adjective

/hɛ.zɪ.tənt/ or /he.zi.tēnt/

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uncertain or reluctant to act or speak, often due to doubt or indecision

likelihood

noun

/laɪk.li.hʊd/ or /laik.li.hood/

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the probability or chance of something occurring

uncertainty

noun

/ʌn.sɜr.tən.ti/ or /an.sēr.tēn.ti/

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something about which one cannot be certain

hunch

noun

/hənʧ/ or /hēnch/

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a feeling or intuition about something, often without conscious reasoning or evidence

prospect

noun

/prɑs.pɛkt/ or /praas.pekt/

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the likelihood or possibility of something becoming successful in the future

scenario

noun

/sɪ.nɛ.rioʊ/ or /si.ne.riooo/

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a hypothetical sequence of events or a plausible situation that could unfold

suspicion

noun

/səs.pɪ.ʃən/ or /sēs.pi.shēn/

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a feeling of doubt or mistrust towards someone or something, often without concrete evidence or proof

reservation

noun

/rɛ.zər.veɪ.ʃən/ or /re.zēr.vei.shēn/

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a lingering uncertainty or hesitation that prevents full acceptance or commitment to something

conjecture

noun

/kən.ʤɛk.ʃɜr/ or /kēn.jek.shēr/

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an idea that is based on guesswork and not facts

to theorize

Verb

/θiɜ.raɪz/ or /thiē.raiz/

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to express various scenarios about something without necessarily basing it on evidence or facts

supposedly

Adverb

/sə.poʊ.zəd.li/ or /sē.pooo.zēd.li/

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used to suggest that something is assumed to be true, often with a hint of doubt