IPA: //ʌnˈbʌfərd//
KK: /ʌnˈbʌfərd/
Describing something that operates without a temporary storage area for data or without a stabilizing agent for pH levels.
The unbuffered solution reacted quickly to changes in pH.
Unbuffered → It is formed from "un-" (meaning not) and "buffer" (from Middle French *buffer*, meaning to soften or cushion). The word "unbuffered" means not softened or cushioned, indicating a lack of buffering effect.
Think of 'not' ('un-') having a 'cushioning' effect ('buffer') — that's why unbuffered means lacking that cushioning.