1. Services that are unreliable, inconsistent, or difficult to anticipate in terms of quality, timing, or availability
The internet service provider was criticized for unpredictable services that frequently went offline without warning.
O provedor de serviços de internet foi criticado pelos serviços imprevisíveis que frequentemente ficavam offline sem aviso prévio.
2. Professional or commercial services that lack consistency and cannot be reliably depended upon
The delivery company's unpredictable services made it difficult for customers to plan their day.
Os serviços imprevisíveis da empresa de entrega tornavam difícil para os clientes planejarem seu dia.