1) Left on the store shelf 2) Not convinced 3) Not disposed of by purchase 4) Still available for sale 5) Still in stock 6) Still in the store 7) Still on the auction block 8) Still on the market 9) Still on the shelf 10) Still on the store shelf Found on https://www.crosswordclues.com/clue/unsold
adjective not disposed of by purchase; `the house has been on the market almost a year and is still unsold` Found on https://www.encyclo.co.uk/local/20974