syn·tac·tic 
(sĭn-tăktĭk) or syn·tac·ti·cal (-tĭ-kəl)
(sĭn-tăktĭk) or syn·tac·ti·cal (-tĭ-kəl)adj.
Of, relating to, or conforming to the rules of syntax.
[Greek suntaktikos, putting together, from suntaktos, constructed, from suntassein, to construct; see SYNTAX.]
syn·tacti·cal·ly adv.
- straight angle
- straight-arm
- straight arrow
- straight-arrow
- straightaway
- straight chain
- straightedge
- straightedged
- straighten
- straightener
- straighten out
- straight face
- straight-faced
- circumscriptive
- circumsolar
- circumspect
- circumspection
- circumspectly
- circumstance
- circumstantial
- circumstantial evidence
- circumstantiality
- circumstantially
- circumstantiate
- circumstantiation