1. (noun) the activity of causing to have energy and be active

• activating
• energizing

1. (noun) stimulation of activity in an organism or chemical

• stimulation

2. (noun) the activity of causing to have energy and be active

• activity

3. (noun) making active and effective (as a bomb)

• beginning
• commencement
• start

1. (noun) stimulation of activity in an organism or chemical

• indweller

2. (noun) the activity of causing to have energy and be active

• animation
• invigoration
• vivification
• electrification

1. (noun) stimulation of activity in an organism or chemical

• activate
• activate
• aerate
• activate
• activate
• actuate
• set off
• spark
• spark off
• touch off
• trigger
• trigger off
• trip

2. (noun) the activity of causing to have energy and be active

• arouse
• brace
• energise
• energize
• perk up
• stimulate
• energise
• energize
• excite

3. (noun) making active and effective (as a bomb)

• activate

1. (noun) stimulation of activity in an organism or chemical

• inactivation

2. (noun) making active and effective (as a bomb)

• deactivation
• defusing