The term 'kept in reserve' can be described by the following crossword solutions: stored (6 letters), saved (5 letters), SPARE (5 letters), onice (5 letters), storedup (8 letters), and salteddown (10 letters). These words all refer to the idea of keeping something in reserve, or saving it for a later time. Stored and storedup imply that something is being kept in a safe place, while saved and SPARE suggest that something is being kept for a specific purpose. Onice and salteddown are more specific terms, referring to the preservation of food items.