затруднять

1) General subject: aggravate (что-либо), bottleneck, complicate, compound by, cumber, discomfort, embarrass, encumber, handicap, hinder, impede (общение, уличное движение, переговоры и т. п.), inconvenience, obstruct, obstruct (проход, прогресс, курс и т.п.), press, render difficult, straiten, trouble, hamper, put to inconvenience

2) Colloquial: be much of a bother (If it's not too much of a bother for you - если тебя не затруднит...)

3) Literal: shackle

4) Military: interdict

5) Mathematics: make (it) difficult

6) Automobile industry: trammel

7) Business: make difficult

8) Makarov: fox, hedge, incumber, obstruct (движение), thwart