HackerVoca

spacious : ample, capacious, extensive, vast
span : distance, length
spare : save, reserve
sparkle : spark, glitter, twinkle
special : particular, especial, peculiar, specific
specimen : sample, model, pattern
spectacular* : dramtic, sensational, impressive
speculation /" / noun [countable, uncountable]

1 the act of guessing without knowing all the facts about something, or the guesses that you make

[+ about]: increased speculation about the possibility of tax cuts | speculation that: There is some speculation that the president was aware of the situation. | pure speculation (=speculation that is not based on any facts): The jury should disregard the witness's last statement as pure speculation. | wild/idle speculation (=speculation that is unlikely to be true)

2 the act of trying to make a profit by speculating (speculate2): property speculation