1. In a manner to cause worry

See also: worrying

• open-face sandwich
• open-faced
• open-heart surgery
• open-hearth
• open-hearth furnace
• open-hearth process
• open-minded
• open-mindedly
• open-mindedness
• open-plan
• open-source
• openbill
• opencast
• opencast mining
• opencut
• opened
• opener
• openhanded
• openhandedness
• openhearted
• opening
• opening line
• opening move
• opening night
• openly