Answer: hatless

AnswerCrossword Clue
HATLESSLike ballplayers during the national anthem
HATLESSUncovered, in military jargon
HATLESSUncovered, in a way
HATLESSBareheaded
HATLESSHow JFK attended his inauguration
HATLESSUncovered.
HATLESSSans sombrero.
HATLESSUncovered
HATLESSLike J.F.K. at his inauguration
HATLESSLike JFK, in most photographs
HATLESSObviously bald
hatlesswithout a hat
hatlessshaped covering for the head