basic requirement
- essentialFundamentally necessary
- fundamentalForming the base
- prerequisiteRequired prior condition
- necessityIndispensable requirement
- foundationUnderlying support structure
baseline · minimum · core · must-have · non-negotiable · cornerstone · threshold · entry-level · bare-bones · groundwork · bedrock · staple · vital · indispensable · elementary · rudimentary · bread-and-butter · survival
necessity level
basic requirementluxury
Expensive nonessential comfort
nice-to-have · frill · bonus · perk · amenity