adjective
important
im-PORT-nt/ɪmˈpɔːrtnt/
Having great significance, value, or influence.
The keystone is important to the arch's stability; removing it causes collapse.

Etymology
“Carry into” formed a verb meaning “bring in,” which developed the sense “be significant.” Its participial adjective described something bearing weight or consequence, the basis of today's meaning.
In context
the photography and the media communication of a building plays a very important role. And that had an influence on how buildings were designed.
More examples
- She has an important appointment.
- This is the most important step.
- Your opinion is important to us.
Forms
important · more important · most important
importance noun — the quality of having significant value
Similar words
- significant
- Emphasizes meaningful effect or consequence.