Abitudine translates to "habit" or "routine". It's a common word, but its use in this song is particularly poignant and powerful, making it stand out.
Nek sings, "Perché tu non sei né sarai abitudine, mai" (Because you are not, nor will you ever be a habit, never). This line beautifully expresses the depth and enduring nature of his love, emphasizing that his feelings are far from a mere routine or something taken for granted. It highlights the special, irreplaceable quality of the person he's singing about.
Have you ever missed someone so much that you don't even feel like yourself anymore? That's the powerful feeling at the heart of Nek's song "Quando Non Ci Sei." The lyrics describe a love so intense that when the person is gone, the singer feels completely lost and fragile. He sings that all of his senses only speak of her, and he realizes there is "no alternative" to her presence in his life.
This isn't just a simple case of missing someone; it's a deep, consuming dependency. The singer feels a "thrill that moves in exact unison" with his love, showing how connected they are. He admits this feeling is an instinct he can't control, a "call stronger than me." The pain of her absence is so strong that he says she's "easy to hate," highlighting the powerful and overwhelming nature of his emotions.