| harvest(verb, turn, produce, clean, discover) |
| haze(verb, obscure, dim, blacken, unlit) |
| hoe(verb, turn, produce, clean, discover) |
| hollow out(verb, expression, phrasal verb, excavate) |
| improve(verb, advance, increase, raise, boost) |
| innervate(verb, disturb, encourage, stimulate, agitate) |
| innerve(verb, disturb, encourage, stimulate, agitate) |
| inspissate(verb, swell, expand, condense, thicken) |
| interchange |
| investigate(verb, turn, produce, clean, discover) |
| irritate |
| kindle(verb, disturb, encourage, stimulate, arouse) |
| lengthen(verb, advance, increase, raise, rise) |
| levitate(verb, advance, increase, raise, swell) |
| lighten(verb, increase, raise, severe, boost) |
| lour |
| make acute |
| make complex |
| make deeper(expression, idiom) |
| make dim(verb, expression, obscure, dim, blacken) |