autochthonous/awʹtokthənəs/ adj

• openhearted
• open-hearth
• open-hearth process
• open-heart surgery
• open house
• opening
• opening time
• open learning
• open letter
• openly
• open market
• open marriage
• open-minded
• openmouthed
• open one's budget
• open out
• open-plan
• open prison
• open question
• open-reel
• open sandwich
• open season
• open secret
• open sesame
• open shop