primal
adjective
[ ˈprʌɪm(ə)l ]
• relating to an early stage in evolutionary development; primeval.
• "primal hunting societies"
• most important; primary or fundamental.
• "rivers were the primal highways of life"
Similar:
basic,
fundamental,
essential,
elemental,
primary,
vital,
central,
intrinsic,
indispensable,
inherent,
cardinal,
characteristic,
Origin:
early 17th century: from medieval Latin primalis, from Latin primus ‘first’.