Here are ten sets of seven letters, each consisting of only 1-point tiles, that have only one anagram, which is an everyday seven-letter word.  What are those everyday words?

AEENSTT
AEIILNR
AEIINRT
AENNRTT
AIORRTT
EEEIRRT
EEILRSU
EIILSTU
EIINNRT
IOORSTU

And, if you thought that was too easy, here’s are five extra sets, also consisting of only 1-pont tiles that also have only one anagram.  They make less common words, but they are the sorts of combinations of letters that you may well find on your rack.  What are these not quite so everyday words?

AAEILNO
AEEINST
AEILRTT
AEINNTT
EEILORT

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The ten “easy” words:
AEENSTT             NEATEST             tidiest
AEIILNR               AIRLINE               an air transportation system
AEIINRT               INERTIA               the tendency of a body to resist acceleration
AENNRTT            ENTRANT            someone who enters
AIORRTT             TRAITOR             one who betrays another
EEEIRRT              RETIREE              one who has retired
EEILRSU              LEISURE              free time
EIILSTU               UTILISE               to make use of
EIINNRT              TINNIER              making a noise like tin
IOORSTU            RIOTOUS            characterised by rioting

And the five not-so-easy words:
AAEILNO             AEOLIAN             relating to, or acted on by the wind
AEEINST              ETESIAN              a wind that occurs annually in the eastern Mediterranean
AEILRTT               TERTIAL               a flight feather of a bird's wing
AEINNTT             ANTIENT             an ancient person
EEILORT              TROELIE              an Amazonian palm tree