1. in a tight, stretched manner; with no slack or looseness
2. in a concise, efficient manner without unnecessary elements

Examples

• The rope was stretched tautly between the two posts.
• Her muscles were held tautly as she prepared to jump.
• The canvas was pulled tautly over the frame.
• The story was tautly written with no wasted words.
• He held the reins tautly to control the horse.
• The wire fence was strung tautly across the field.
• The thriller was tautly paced from beginning to end.