1) Enlargement 2) Exacerbation 3) Exaggeration 4) Increase 5) Intension 6) Rise 
• (n.) The act or process of intensifying, or of making more intense.
<pharmacology> Increasing the amount, number or combination of anti-cancer drugs given to a patient in an attempt to kill drug-resistant or residual leukaemic cells. ... (13 Nov 1997) ... 
In·ten`si·fi·ca'tion noun The act or process of intensifying, or of making more intense. 
[n] - (photography) the act of increasing the contrast of (a photographic film) 2. [n] - action that makes something stronger or more extreme
noun action that makes something stronger or more extreme
action that makes something stronger or more extreme