IPA: /ˌæməˈtɪrɪʃnəs/
KK: /ˈæmətərɪʃnəs/
The state or quality of being inexperienced or unskilled in a particular activity, often resulting in a lack of professionalism.
The amateurishness of the performance was evident to the audience.
Amateurishness is formed from "amateur" (from French *amateur*, meaning one who loves or is fond of) and the suffix "-ish" (meaning having the quality of) combined with "-ness" (meaning a state or condition). The word describes the state or quality of being like an amateur, often implying a lack of professionalism or skill.
Think of someone who 'loves' something ('amateur') but may not have the professional skills, and the '-ish' and '-ness' indicate a quality or state of being. This helps you remember that 'amateurishness' refers to the quality of being like an amateur.