betread /bi-tredˈ/

To tread over or walk upon

• operations
• operations research
• operative
• operatively
• operativeness
• operativenesses
• operatives
• operative words
• operator
• operators
• opercula
• opercular
• operculate
• operculated
• operculum
• opere citato
• operetta
• operettas
• operettist
• operettists
• operon
• operons
• operose
• operosely
• operoseness