If you describe someone as importunate, you think that he is annoying and unreasonable because he keeps trying to get something from you.
When something happens at an inopportune time it is inconvenient or not suitable.
An opportunity is something good that is offered to you that you can choose to do if you want.
an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo
beg persistently and urgently
insistent solicitation and entreaty
suitable or at a time that is suitable or advantageous especially for a particular purpose
taking advantage of opportunities without regard for the consequences for others
taking immediate advantage, often unethically, of any circumstance of possible benefit
any authorization to pass or go somewhere
put or turn on the left side, of a ship
a grand and imposing entrance (often extended metaphorically)
carry luggage or supplies
a sheltered port where ships can take on or discharge cargo
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