at an early stage

developing

of, at, the beginning; to mark, sign (something) with one's initials

beginning, primary

a small amount of

small in size, amount

first or earliest known; newly created; not copied or imitated; able to produce new ideas etc

earliest

that will possibly happen or come into existence; what a person or thing is capable of achieving

promising

done, happening, doing something, before the right or usual time

earlier in occurrence than anticipated

including the first stage only; undeveloped

basic, fundamental

with no definite shape

formless

not used or developed

immature