worst of the worst; despicable; extremely bad
lowest-ranking; one-star (hotel, restaurant, etc.)
minimum limit; the lowest degree (possible, allowable, etc.)
minimum temperature; lowest temperature; (today's) low
minimum price; floor price
lowest ever; record-low; lowest on record
lowest level; minimum level; ground floor
minimum buyout price (bid); reserve price (auction)
minimum age (e.g. employment)
diastolic blood pressure; minimal blood pressure