IPA: /ɪˈnɛptɪtjuːd/
KK: /ɪˈnɛptɪtud/
The state of being unskilled or clumsy in a particular task or situation.
His ineptitude in handling the project led to many mistakes.
Ineptitude is formed from "inept" (from Latin "ineptus", meaning unsuitable or unfit) and "-itude" (a suffix used to form nouns indicating a state or condition). The word describes the state of being unsuitable or lacking skill.
Think of 'inept' meaning unsuitable or unfit, and remember that 'ineptitude' refers to the state of being unfit or lacking skill.