speculation
US /ˌspek.jəˈleɪ.ʃən/
UK /ˌspek.jəˈleɪ.ʃən/

1.
especulação, conjectura
the forming of a theory or conjecture without firm evidence
:
•
His disappearance has led to much speculation.
Seu desaparecimento levou a muita especulação.
•
There was widespread speculation that he would resign.
Havia ampla especulação de que ele renunciaria.
2.
especulação, investimento de risco
investment in stocks, property, or other ventures in the hope of gain but with the risk of loss
:
•
He made his fortune through shrewd financial speculation.
Ele fez sua fortuna através de astuta especulação financeira.
•
The real estate market is prone to periods of intense speculation.
O mercado imobiliário é propenso a períodos de intensa especulação.