This is the 691st most frequent Czech word.
pořádně
Properly; thoroughly; seriously.
Here, 'pořádně' means 'thoroughly' or 'with care', emphasizing the manner of the action to ensure it is done properly.
Musíš se na to pořádně podívat.
You must look at it thoroughly.
In this case, 'pořádně' relates to the inadequate completion of an action, implying the action was not accomplished as desired or with full efficiency.
Nemohl jsem pořádně spát kvůli hluku.
I couldn't sleep properly because of the noise.
Here, 'pořádně' indicates performing an action strongly or securely, ensuring that it is done with sufficient force or attention to prevent failure.