How to sign: the amount by which something increases
"they proposed an increase of 15 percent in the fare";
Similiar / Same: increment
Categories: amount
Within this category: amplification, complement, fare increase, price increase, raise, rise, supplement, tax-increase, up-tick
How to sign: become bigger or greater in amount
"The amount of work increased";
Categories: change magnitude
Within this category: accrue, accumulate, add, add to, appreciate, broaden, crescendo, explode, gain, grow, intensify, intensify, pullulate, pyramid, shoot up, snowball, spike, swell, wax, wax, widen