Speculative \Spec"u*la*tive\, a. [Cf. F. sp['e]culatif, L. speculativus.]

1. Given to speculation; contemplative.

The mind of man being by nature speculative. --Hooker.

2. Involving, or formed by, speculation; ideal; theoretical; not established by demonstration. --Cudworth.

3. Of or pertaining to vision; also, prying; inquisitive; curious. [R.]

--Bacon.

4. Of or pertaining to speculation in land, goods, shares, etc.; as, a speculative dealer or enterprise.

Source: Webster's Revised Unabridged Dictionary (1913)