speculative

adjectives

not financially safe or secure
"a bad investment"; "high risk investments"; "anything that promises to pay too much can't help being risky"; "speculative business enterprises"
is derived from
is derived from
not based on fact or investigation
"a notional figure of cost helps in determining production costs"; "speculative knowledge"
is derived from
is derived from
is derived from
showing curiosity
"if someone saw a man climbing a light post they might get inquisitive"; "raised a speculative eyebrow"
is derived from