Undeveloped
Part of speech: adjective
Definition: not developed or used lagging behind others, especially in economic or social matters
Fallow
Part of speech: noun
Definition: Ground ploughed and harrowed but left unseeded for one year.Uncultivated land.An area of fallow land.
Part of speech: adjective
Definition: Ploughed but left unseeded for more than one planting season.Inactive; undeveloped.A pale red or yellow, light brown; dun.
Part of speech: verb
Definition: To make land fallow for agricultural purposes.
Example sentence: In my work, there's a tremendous amount of rejection and waves of fertile and fallow times.