| drain |
something that slowly uses up energy, money, or some other resource. [1/9 definitions] |
| dynamic |
full of energy and strength; lively; active. |
| effort |
the action of physical or mental energy. [1/2 definitions] |
| electricity |
energy caused by the movement of electrons through matter. [1/3 definitions] |
| energetic |
full of energy; active. |
| engine |
a machine that uses energy from fuel or electricity to do work, such as to move. [1/2 definitions] |
| enterprising |
willing to do things that require energy and imagination. |
| exhaustion |
complete loss of energy; extreme fatigue. [1/2 definitions] |
| exhilarate |
to fill with energy. [1/2 definitions] |
| fission |
the splitting of the nucleus of an atom into two or more nuclei. This makes more atoms of lighter elements and gives off large amounts of energy. |
| flat1 |
having little interest, energy, or flavor; dull. [1/12 definitions] |
| fluorescent |
able to give off visible light after being exposed to a source of heat, light, or other form of energy. |
| force |
power, energy, or physical strength. [2/6 definitions] |
| fortify |
to give more strength, resistance, or energy to; reinforce. |
| frequency |
the number of energy waves that pass a certain point in a certain time period. Frequency is used to measure radio waves and other kinds of radiation. [1/3 definitions] |
| fuel |
anything such as wood or gasoline that is burned as a source of energy. [2 definitions] |
| full of beans |
(informal) full of energy; very active. [1/2 definitions] |
| fusion |
a reaction that combines the nuclei of atoms to form heavier nuclei. A huge amount of energy is released during nuclear fusion. [1/4 definitions] |
| generator |
a machine or device that produces electricity or other energy. [2 definitions] |
| go1 |
energy and spirit. [1/16 definitions] |
| go overboard |
to do far too much, or with too much energy. |