Rudimentary (9)
'rudimentary' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for basic that I've seen before include "Fundamental, forming a starting point" , "Elemental" , "Forming a foundation" , "Fundamental, forming a starting-point" , "Spartan" .)
'rudimentary' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for primitive that I've seen before include "extremely basic" , "At a very early stage of development" , "With basic level of comfort" , "Unsophisticated - crude" , "Of an early stage of civilization" .)
'rudimentary' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for elemental that I've seen before include "Fundamental; supernatural entity" , "Related to the powers of nature" , "being like Mercury?" , "Pertaining to weather or to first principles" , "Essential" .)