DIG - To move hard-packed earth out of the way, especially downward to make a hole with a shovel. Or to drill, or the like, through rocks, roads, or the like. More generally, to make any similar hole by moving material out of the way.
DIP - A lower section of a road or geological feature.
PER - For each.
PIE - A type of pastry that consists of an outer crust and a filling.
PIG - Any of several mammals of the genus Sus, having cloven hooves, bristles and a nose adapted for digging; especially the domesticated farm animal Sus scrofa.
RIG - The rigging of a sailing ship or other such craft.
RIP - A tear (in paper, etc.).
DIRE - Ill-boding; portentous.
DRIP - To fall one drop at a time.
GRID - A rectangular array of squares or rectangles of equal size, such as in a crossword puzzle.
GRIP - To take hold of, particularly with the hand.
PIER - A raised platform built from the shore out over water, supported on piles; used to secure, or provide access to shipping; a jetty.
RIDE - To play defense on the defensemen or midfielders, as an attackman.
RIPE - Ready for reaping or gathering; having attained perfection; mature; -- said of fruits, seeds, etc.; as, ripe grain.
PRIDE - The quality or state of being proud; inordinate self-esteem; an unreasonable conceit of one's own superiority in talents, beauty, wealth, rank etc., which manifests itself in lofty airs, distance, reserve and often contempt of others.
RIDGE - The back of any animal; especially the upper or projecting part of the back of a quadruped.
GRIPE - To make a grab (to, towards, at or upon something).
PRIED - Simple past tense and past participle of pry.
DIRGE - A mournful poem or piece of music composed or performed as a memorial to a dead person.
GRIPED - Simple past tense and past participle of gripe.