[verb] increase in extent or intensity; "The Allies escalated the bombing" Synonyms:escalate, step up
[verb] make more intense, stronger, or more marked; "The efforts were intensified", "Her rudeness intensified his dislike for her"; "Potsmokers claim it heightens their awareness"; "This event only deepened my convictions" Synonyms:compound, heighten, deepen
[verb] become more intense; "The debate intensified"; "His dislike for raw fish only deepened in Japan" Synonyms:deepen
[verb] make the chemically affected part of (a negative) denser or more opaque in order produce a stronger contrast between light and dark