The old man read the book attentively.
Meaning: This means the male person who has lived for a long time was very focused while reading the written or printed matter.
Choice of Words: Old means having lived for a long time. Man is an adult male human. Read means to look at and understand written or printed matter. Attentively means with careful attention and concentration. When you put them together, it means the male person who has lived for a long time was very focused and concentrated while looking at and understanding the written or printed matter.
Alternative Expressions
Related Expressions