entrainment
Chad
HEART The first four letters 'hear' refer to the function of the middle three letters, 'ear.' The last three letters 'art' is stuff that you do.
entanglement
dido
A very unique thing happens with the spelling of the word underground. The first three letters, in sequence, match the last three letters.
Ops
Maryland New Hampshire Rhode Island Delaware
Car, the, wow, His, Her, Him, She. Any three letter word
XFD is the column label on the last column in a Microsoft Excel 2007 worksheet.
dandruff
The fad shop