1. lasting or continuing throughout the entire duration of something, especially a day
Usage: often used with ‘day’ or similar time periods

Examples

• She spent the livelong day working in the garden.
• We waited the livelong night for news of the rescue.
• The children played outside the livelong summer afternoon.
• He complained about his job the livelong evening.
• They traveled the livelong day to reach the mountain cabin.
• The livelong week was filled with rain and storms.