1. not practical; not suitable for actual use or not likely to work successfully
2. lacking good judgment about what is sensible or realistic

Examples

• The plan to build a bridge there seems impractical due to the high cost.
• Her impractical shoes made walking on the beach difficult.
• It would be impractical to drive across the country in one day.
• The designer’s impractical dress looked beautiful but was impossible to wear.
• His impractical nature often led him to make unrealistic promises.
• The impractical layout of the kitchen made cooking very inefficient.
• She had many impractical ideas about starting her own business.