Intentiveness is a quality that involves being very focused and attentive towards achieving a goal or completing a task. The synonyms for intentiveness include attentiveness, diligence, focus, concentration, perseverance, determination, commitment, dedication, and vigilance. These words all describe the quality of being deeply invested in a particular activity or objective, and being careful not to lose sight of it amidst distractions or competing goals. By maintaining a high level of intentiveness, one can improve their chances of success, as they are less likely to make mistakes or lose focus. It is an important trait for those seeking to achieve long-term goals, and can help individuals maintain a motivated and purposeful outlook over time.