sweetly russian

• ла́сково

  affectionately

  tenderly, gently, sweetly

• сла́дко

  it is sweet, sweetly

• сладостно

  sweetly, rapturously, blissfully, delightfully

• уми́льно

  touchingly, endearingly, sweetly, pitifully

Examples

• Ким ласково улыбну́лся.Kim smiled sweetly.
• Ким ласково улыбну́лась.Kim smiled sweetly.