1) Activated 2) Excited 3) French word used in English 4) Like atomic hydrogen 5) Not setting the agenda 6) Not showing initiative 7) Not taking the lead 8) Nuclear adjective 9) Oxidizable 10) Reacting to a stimulus 11) Responding 12) Showing response 13) Unstable 1) Inert 2) Oxidizable 3) Receptive 4) Sensitive 
• (a.) Having power to react; tending to reaction; of the nature of reaction.
qualifies, under sinusoidal conditions, a linear circuit element or circuit for which the time integral of the instantaneous power over an integral number of periods is zero NOTE - A reactive circuit element or circuit is passive and non-dissipative.qualifies an inductive as well as a capacitive device or circuit
(re-ak´tiv) characterized by reaction; readily responsive to a stimulus.
Tendency of a substance to undergo chemical change. May occur when exposed to other substances; detonate or explode through exposure to heat, sudden shock, or pressure.
Re·act'ive (re*ăkt'ĭv) adjective [ Confer French réactif .] Having power to react; tending to reaction; of the nature of reaction. -- 
[adj] - tending to react to a stimulus 2. [adj] - (chemistry and physics) participating readily in reactions
adjective tending to react to a stimulus; `the skin of the geriatric is less reactive than that of younger persons`- Louis Tuft