To determine the trend of Moody's adjusted leverage for TERNA S.P.A. in 2022, we analyze the Adjusted Debt to Adjusted EBITDA ratio for both 2021 and 2022.

**1. Calculate Adjusted EBITDA:**
*For 2021:*
* Operating Income (Profit/Loss From Operating Activities): 1,200,400,000 EUR
* Depreciation, Amortisation, and Impairment Loss: 654,400,000 EUR
* EBITDA = 1,200,400,000 + 654,400,000 = 1,854,800,000 EUR

*For 2022:*
* Operating Income (Profit/Loss From Operating Activities): 1,333,500,000 EUR
* Depreciation, Amortisation, and Impairment Loss: 725,700,000 EUR
* EBITDA = 1,333,500,000 + 725,700,000 = 2,059,200,000 EUR
*(EBITDA grew by roughly 11%)*

**2. Calculate Adjusted Debt:**
*For 2021:*
* Long-term Borrowings: 8,835,000,000 EUR
* Short-term Borrowings: 1,947,000,000 EUR
* Current Portion of Long-term Borrowings: 1,640,000,000 EUR
* Basic Total Debt = 12,422,000,000 EUR

*For 2022:*
* Long-term Borrowings: 8,416,700,000 EUR
* Short-term Borrowings: 444,100,000 EUR
* Current Portion of Long-term Borrowings: 1,909,300,000 EUR
* Basic Total Debt = 10,770,100,000 EUR
*(Note: Terna issued a 989,000,000 EUR perpetual hybrid bond in 2022, which Moody's typically treats as 50% equity and 50% debt. Adding 50% (494,500,000 EUR) brings the adjusted debt to roughly 11,264,600,000 EUR. Even considering the hybrid treatment, total debt has significantly decreased.)*

**3. Leverage Ratio (Debt / EBITDA):**
* 2021 Leverage: 12,422.0 M / 1,854.8 M ≈ 6.70x
* 2022 Leverage: 11,264.6 M / 2,059.2 M ≈ 5.47x (or ≈ 5.23x without hybrid adjustments)

With robust EBITDA generation and a substantial reduction in total borrowings (bolstered by the issuance of hybrid equity components replacing direct debt), the adjusted leverage multiple declined significantly. Consequently, the firm's financial leverage profile has improved.

<answer>Improving</answer>