constrain
verb
-
To force physically, by strong persuasion or pressuring; to compel; to oblige.
-
To keep within close bounds; to confine.
-
To reduce a result in response to limited resources.
put a monkey wrench in the works of
How often have the words constrain and put a monkey wrench in the works of occurred in a corpus of books? (source: Google Ngram Viewer )