Answer:

oath

Answer	Crossword Clue
OATH	Formal declaration
OATH	Four-letter word
OATH	Hippocratic ..

OATH	Inauguration words
OATH	Courtroom promise
OATH	Declaration
OATH	Promise to tell the truth
OATH	Swear words?
OATH	Boy Scout recitation
OATH	Curse
OATH	Hippocratic, for one

OATH	Inauguration-day promise
OATH	Pledge
OATH	Swear words
OATH	Witness's promise
OATH	Vow
OATH	Solemn promise
OATH	Swearing-in words
OATH	"Fiddlesticks!", e.g.

OATH	It's taken with an upraised hand
OATH	Troth
OATH	Expletive
OATH	Word of honor
OATH	"Odd's bodikins," e.g.
OATH	Swear word
OATH	Swearword
OATH	Blasphemous utterance

OATH	Blue utterance
OATH	Citizenship recitation
OATH	Solemn vow
OATH	Swearing-in speech
OATH	Inauguration recitation
OATH	Words sworn
OATH	Swearer's words
OATH	Inaugural ritual

OATH	Imprecation
OATH	Solemn word
OATH	Bunch of swear words?
OATH	Profanity
OATH	"Repeat after me" oration