Obstructive

a.	1.	Tending to obstruct; presenting obstacles; hindering; causing impediment.
n.	1.	An obstructive person or thing.

Adj.

1.

obstructive - preventing movement; "the clogging crowds of revelers overflowing into the street" Synonyms: clogging, hindering, impeding

choking, complaining, constrictive, contrary, counterproductive, crosswise, disputatious, disputing, dissentient, dissenting, fractious, hindering, hindersome, in the way, inhibiting, inhibitive, interrupting, interruptive, noncooperative, objecting, obstructing, obstruent, occlusive, on the barricades, proof against, protesting, rebellious, recalcitrant, refractory, reluctant, renitent, repellent, repressive, resistant, resisting, resistive, restrictive, retardant, retardative, stifling, strangling, suppressive, troublesome, uncooperative, unsubmissive, unyielding, up in arms, withstanding