The Italian word "tremoloso" can be translated to English as "tremulous" or "trembling". It can also be described as "quivering", "shaky", "quavering", or "unsteady". The word is often used to describe a person's voice or hands that shake due to nervousness, fear, or excitement. Synonyms for "tremoloso" can also include "trembling", "trembly", "shuddery", or "quivery". When applied to music, the word can refer to the slightly wavering or trembling sound produced by a stringed instrument, such as a violin or cello. It can also be used to describe the vibrato technique used by singers.