I am genuinely confused about the reasoning behind you asking this question...
The word 'in' would be a preposition in the example sentence you gave.
I genuinely want to be a Proffesional Tennis PlayerI genuinely think you don't want to go on holidayYou genuinely don't sound so pleasedHe genuinely said they won the prize
I really am genuinely fond of the little darling.
The word is spelled as you have done in the question.
I have...It's not very difficult, he seems to include that word in every sentence
Please accept my apologies I am genuinely sorry.
I am GENUINELY sorry that you had to ask a question like this.
genuinely.
The phrase keep going genuinely has many synonyms and sentence structures to its definition. Some of which include, maintaining a specific action or to carry on with a specific order of activity.
The teacher's stern expression made it clear that she would not tolerate any misbehavior in her classroom. Despite her tough demeanor, the students knew she genuinely cared about their success.
A SENTENCE WITH THE WORD OUNCE A SENTENCE WITH THE WORD OUNCE A SENTENCE WITH THE WORD OUNCE A SENTENCE WITH THE WORD OUNCE
a sentence with the word variety