| Unit of longitude | 17 |
| Unit of local govt. | 19 |
| Unit of literature? | 19 |
| Unit of literature | 18 |
| Unit of linear or square measure | 32 |
| Unit of light-bulb intensity | 28 |
| Unit of light or hope | 21 |
| Unit of light intensity | 23 |
| Unit of light energy | 20 |
| Unit of light bulb intensity | 28 |
| Unit of light | 13 |
| Unit of life | 12 |
| Unit of length used for measuring nuclear distances | 51 |
| Unit of length that's roughly the diameter of a proton | 58 |
| Unit of length for Noah | 23 |
| Unit of length equal to 1,760 yards | 35 |
| Unit of length | 14 |
| Unit of laundry | 15 |
| Unit of laughter | 16 |
| Unit of land measurement | 24 |
| Unit of land measure | 20 |
| Unit of land area | 17 |
| Unit of land | 12 |
| Unit of labor | 13 |
| Unit of Kiribati | 16 |
| Unit of irrigation | 18 |
| Unit of instruction | 19 |
| Unit of inheritance | 19 |
| Unit of information | 19 |
| Unit of inductance | 18 |
| Unit of indigestion relief | 26 |
| Unit of illumination | 20 |
| Unit of house work | 18 |
| Unit of hope? | 13 |
| Unit of hope | 12 |
| Unit of heredity | 16 |
| Unit of heat? | 13 |
| Unit of heat: Abbr. | 19 |
| Unit of heat, for short | 23 |
| Unit of heat energy | 19 |
| Unit of heat | 12 |
| Unit of hair | 12 |
| Unit of gunpowder | 17 |
| Unit of grass | 13 |
| Unit of gossip | 14 |
| Unit of geologic time | 21 |
| Unit of gene activity | 21 |
| Unit of gem weight | 18 |
| Unit of funny money | 19 |
| Unit of fun? | 12 |
| Unit of fuel use: Abbr. | 23 |
| Unit of fright | 14 |
| Unit of frequency | 17 |
| Unit of freq. | 13 |
| Unit of force? | 14 |
| Unit of force | 13 |
| Unit of food energy | 19 |
| Unit of flux density, or the physicist for whom it is named | 59 |
| Unit of flux | 12 |
| Unit of fluidity | 16 |
| Unit of flow | 12 |
| Unit of finger food | 19 |
| Unit of fineness for silk | 25 |
| Unit of fineness for nylon yarn | 31 |
| Unit of fineness for gold | 25 |
| Unit of fat | 11 |
| Unit of farmland | 16 |
| Unit of explosive force | 23 |
| Unit of exercise | 16 |
| Unit of energy? | 15 |
| Unit of energy: Abbr. | 21 |
| Unit of energy, in physics | 26 |
| Unit of energy (not power or time) | 34 |
| Unit of energy (not potential) | 30 |
| Unit of energy | 14 |
| Unit of electricity | 19 |
| Unit of electrical resistance | 29 |
| Unit of electrical power | 24 |
| Unit of electrical potential | 28 |
| Unit of electrical force | 24 |
| Unit of electrical current | 26 |
| Unit of electrical conductance | 30 |
| Unit of electrical charge | 25 |
| Unit of electrical capacity | 27 |
| Unit of electric current, informally | 36 |
| Unit of electric current | 24 |
| Unit of electric charge equivalent to 3,600 coulombs | 52 |
| Unit of electric charge | 23 |
| Unit of elec. current | 21 |
| Unit of elec. | 13 |
| Unit of eight computer bits | 27 |
| Unit of doubt | 13 |
| Unit of distance (not time) | 27 |
| Unit of distance | 16 |
| Unit of discourse | 17 |
| Unit of derring-do | 18 |
| Unit of data transmission | 25 |
| Unit of current, informally | 27 |
| Unit of current's strength | 30 |
| Unit of current | 15 |