| Brain-scan letters |
| Amass, as a bar bill |
| Billion (prefix) |
| Archaeologist's letters |
| Target of Bill Maher's "New Rule: stop wearing plastic shoes |
| All, e.g., for this answer's last six letters? |
| A billion years |
| Organizations with Greek letters |
| Confusing statements ... and a hint to the circled letters |
| Defeats, as a bill |
| Electrically versatile rock band? |
| Attend a party uninvited ... and a literal hint to five sets of circled letters |
| Electric guitar pioneer Fender |
| Accompaniers of cover letters: Abbr. |
| Electrically charged particle |
| More grimy bill of fare? |
| Surprises unpleasantly, and a hint to each starred answer's first two + last two letters |
| Letters from the family? |
| Bills or church groups |
| Frog eaters with curved bills |
| Billy Budd's affirmatives |
| An ugly billboard, e.g. |
| Bounced-check letters |
| Adjust space between letters, in printing |
| Retirement plan letters |
| Whatever it takes ... as hinted at in the arrangements of black squares around the circled letters |
| Personal letters |
| Lawman "Wild" Bill |
| ICU instruction letters |
| Letters preceding an assumed name |