This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Acting in advance to deal with an expected difficulty; anticipatory: proactive steps to prevent terrorism.

adj. Acting in advance to deal with an expected change or difficulty

adj. (of a policy or person or action) controlling a situation by causing something to happen rather than waiting to respond to it after it happens

adj. descriptive of any event or stimulus or process that has an effect on events or stimuli or processes that occur subsequently

"So her campaign has been trying what it calls a proactive effort to fix problems with committee reports it filed with the State Board of Elections, performing a voluntary audit of her campaign finances and forfeiting donations that had a whiff of potential illegality."

active   

reactive   

proact    proactor   

proactivity    proactiveness    proactively   

anticipatory    forward-looking   

active    attractive    hyperactive    inactive    interactive    overactive    photorefractive    radioactive    reactive    refractive   

entrepreneurial    collaborative    quantitative    judgmental    cost-effective    preventative    corrective    therapeutic    innovative    wait-and-see