intensify
verb
[ ɪnˈtɛnsɪfʌɪ ]
• become or make more intense.
• "the dispute began to intensify"
Similar:
escalate,
step up,
boost,
increase,
raise,
sharpen,
strengthen,
augment,
add to,
concentrate,
reinforce,
gain strength,
pick up,
build up,
heighten,
deepen,
broaden,
widen,
extend,
expand,
amplify,
magnify,
aggravate,
exacerbate,
make worse,
worsen,
inflame,
compound,
• increase the opacity of (a negative) using a chemical.
• "the negative may be intensified with bichloride"
Origin:
early 19th century: coined by Coleridge.