whiffet (?.)

• a nobody
• a nothing
• breath
• breath of air
• capful of wind
• cipher
• common man
• dummy
• figurehead
• flatus
• insignificancy
• jackstraw
• lightweight
• little fellow
• little guy
• man of straw
• mediocrity
• nebbish
• nobody
• nobody one knows
• nonentity
• nothing
• nullity
• obscurity
• pip-squeak
• puff
• puff of air
• puff of wind
• punk
• runt
• scrub
• shrimp
• small fry
• small potato
• small potatoes
• squirt
• squit
• stir of air
• waft
• whiff
• whippersnapper
• zero
• zilch