Inventor who experienced ups and downs (4)
I believe the answer is:
otis
(Other definitions for otis that I've seen before include "Place of worship; side part of head" , "Regretful miss" , "Lift man" , "US inventor" , "-- Redding, US singer" .)
I believe the answer is:
otis
(Other definitions for otis that I've seen before include "Place of worship; side part of head" , "Regretful miss" , "Lift man" , "US inventor" , "-- Redding, US singer" .)