There is a total of 373 clues beginning with um
- Umpire's decisions
- Umpire's doings
- Umpire's face wear
- Umpire's favorite dessert?
- Umpire's first call
- Umpire's flub
- Umpire's guideline
- Umpire's helper
- Umpire's home plate cleaner
- Umpire's no-no
- Umpire's opening call
- Umpire's order
- Umpire's palms-down call
- Umpire's place
- Umpire's ruling
- Umpire's scream, sometimes
- Umpire's shout
- Umpire's signal
- Umpire's signal
- Umpire's starting call
- Umpire's supply
- Umpire's thumb signal
- Umpire's various shouts
- Umpire's verdict
- Umpire's verdict on 54 Across
- Umpire's visual call
- Umpire's wear
- Umpire's word
- Umpire's yell
- Umpire's yell, sometimes
- Umpire, for one
- Umpire
- Umpire: Abbr
- Umpires
- Umpires call them
- Umpires' decisions
- Umpires' decisions
- Umpires' wear
- Umpires?
- Umpire’s call
- Umpire’s count after a ball and a strike
- Umpire’s ruling
- Umps
- Umps call
- Umps call them
- Umps kin
- Umps man them
- Umps' associates
- Umps' calls
- Umps' calls
- Umps' companions
- Umps' counterparts
- Umps' cousins
- Umps' decisions
- Umps' kin
- Umps' relatives
- Umps, approximately?
- Umpteen
- Umpteen millennia
- Umpteen years
- Umpteen's ordinal?
- Umpteen, with "a"
- Umpteen
- Umpteen’s antithesis
- Ump’s place
- Umrah destination
- Ums' cousins
- UMW chief
- UMW head
- UMW member
- UMW members output
- UMW opening
- UMW's labor leader