The term 'drop precipitously' can be described by four different words, all of which mean to fall suddenly and rapidly. The first word is 'PLUNGE, ' which has 6 letters and means to move quickly and forcefully downward. The second word is 'TANK, ' which has 4 letters and means to fall or decline suddenly and drastically. The third word is 'PLUMMET, ' which has 7 letters and means to drop or sink suddenly and steeply. The fourth word is 'DIVE, ' which has 4 letters and means to PLUNGE headfirst into water. All of these words describe the same action of dropping precipitously.