1. (a.) Tending to obstruct; presenting obstacles; hindering; causing impediment.

2. (n.) An obstructive person or thing.

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