Meaning
especially, particularly, not to mention
Notes
لَا سِيَّمَا - especially, particularly تَحْدِيدًا / بِالتَّحْدِيد - specifically بِالتَّأْكِيد - certainly, definitely (for comparison, not a synonym)
سِيَّما، لا سِيَّما
especially, particularly, not to mention
لَا سِيَّمَا - especially, particularly تَحْدِيدًا / بِالتَّحْدِيد - specifically بِالتَّأْكِيد - certainly, definitely (for comparison, not a synonym)