hin·der 1 
(h
ĭn
d
ər)
v. hin·dered, hin·der·ing, hin·ders
v.tr. To obstruct or delay the progress of: a snowfall hindered the mountain climbers; lack of funds that hindered research.
v.intr. To interfere with action or progress.
[Middle English hindren, from Old English hindrian; see ko- in the Appendix of Indo-European roots.]
hinder·er n.