Question

A 'complete' word is a word in which every letter, in turn, can be replaced by another to form a new word. For example, SEND is a complete word because: Starting with SEND we can replace the S with an L to make LEND Starting with SEND we can replace the E with an A to make SAND Starting with SEND we can replace the N with an E to make SEED Starting with SEND we can replace the D with a T to make SENT. Which 2 of the following words are not complete words? Proper nouns (i.e. people's names) are not allowed. HARD PORT DUCK HANG BAIL MAST THIN LEAN FIRE READ

Answer 1

HANG and LEAN.
The remaining 8 words can be changed as follows:
HARD >> CARD, HERD, HAND, HARP
PORT >> FORT, PART, POET, PORE
DUCK >> MUCK, DECK, DUSK, DUCT
BAIL >> HAIL, BOIL, BAWL, BAIT
MAST >> CAST, MOST, MALT, MASK
THIN >> SHIN, TWIN, THAN, THIS
FIRE >> HIRE, FARE, FIVE, FIRM
READ >> BEAD, ROAD, REED, REAL