Kusaina
Kusaina is a Swahili word meaning "to be certain," "to be sure," or "to be convinced." It signifies a state of confirmed knowledge or belief, lacking doubt. It can refer to certainty regarding a fact, an idea, or a person's actions or intentions. The term carries a sense of confidence and assurance. It is derived from the verb "-kusanya," which means "to gather" or "to collect," implying the gathering of evidence or understanding to reach a state of certainty. The level of certainty implied by "kusaina" can vary depending on context, ranging from a strong conviction to absolute proof.