: not designed : unintentional.

What is meant by undesigned?

undesigned in American English

(ˌundɪˈzaind) adjective. not planned beforehand; unpremeditated; unintentional.

What does astute mean in simple terms?

: having or showing shrewdness and an ability to notice and understand things clearly : mentally sharp or clever an astute observer astute remarks also : crafty, wily.