The word "twotime" refers to a person who has been unfaithful or deceitful in a romantic relationship. Its antonyms are loyal, faithful, trustworthy, steadfast, and reliable. A loyal partner is committed, dedicated, and true to their word. Being faithful means being devoted, trustworthy, and honest in a relationship. A trustworthy partner is dependable, reliable, and can be counted on to keep their promises. A steadfast partner is unwavering and resolute in their love and commitment. Finally, a reliable partner is dependable, accountable, and can be trusted to always be there for their partner. These qualities are essential for a healthy and happy relationship, and they are the exact opposite of what a "twotime" represents.