| A | B |
| intermittent | coming and going at intervals |
| protract | draw out; prolong; continue; extend |
| sporadic | occurring occasionally |
| docile | easily taught |
| tractable | easily controlled |
| prerequsite | something required beforehand |
| outlandish | strange; fantastic |
| uproot | remove completely |
| antedate | assign a date before the true date |
| adherent | one who sticks to a leader |
| implicate | show to be part of or connected with |
| intravenous | within or by way of the veins |
| interlude | break; intermission |
| contraband | smuggled goods |
| obliterate | erase; blot out |
| coherent | sticking together |
| obsess | haunt; preoccupy |
| perturb | agitate; upset |
| perforate | pierce; puncture |
| persist | refuse to stop; persevere |