fixate

verb

Etymology: From fix + -ate (verb-forming suffix) or Latin fixus (“fixed, solid”) + -ate.

1. To make something fixed and stable; to fix.
2. To stare fixedly at something.
3. To attend to something to the exclusion of all others.

   “He needed something to fixate on now that the repainting was done.”

4. To attach oneself to a person or thing in a pathological, neurotic, or obsessive manner.