Douglas Harper's Etymology Dictionary
1937, from French syntagmatique (de Saussure), from Greek syntagma "that which is put together in order," from syntassein (see syntax).
Wiktionary
a. Of or pertaining to a syntagma
WordNet
adj. related as members of a syntagma; "syntagmatic word associations" [ant: paradigmatic]
Usage examples of "syntagmatic".
We can probably set her up in a special Institute for Southern Baptist Hospitality Studies, from whence she can ramificate the engenderments of affections -- the calls, so to speak -- that we, you and I, have used upon occasion for the rearticulation of syntagmatic deciduation, if you take my meaning, make a list of those, and then turn her razor-eyed but very polite Southern aristocratic attention to the pause, a unit of meaning crying out for some attention in my book.