There are 523 5-letter words ending with R in the ENABLE dictionary — 6% of all 8,636 words at this length. R is a one-point tile, so the value in this list is positional rather than numerical — which of these you can play depends far more on where it fits the board than on what it scores.
The list divides into 25 groups by first letter, the largest being the 62 words with s…r. Scanning the right group is faster than reading the whole list, which is why it is broken up below rather than run alphabetically.
If you know more than one letter, this page stops being the fast way to find it. Enter what you have in the unscrambler — the Contains, Starts with and Ends with filters combine, and setting both length fields to 5 narrows this list to the handful your letters actually allow.
All 523 words, by first letter
A…R (32)
abhor abler actor adder after agger aider aimer airer aiver alder algor altar alter amber ameer amour anear anger apter arbor ardor armer armor asker asper aster astir attar auger augur aurar
B…R (20)
baker baler barer baser bazar bevor bider biker biter blear bluer bolar boner borer bower boxer boyar briar brier buyer
macer major makar maker malar manor maser mater mayor mazer merer meter miler mimer miner minor miser miter mixer mohur molar moper motor mover mower mucor muser muter
N…R (9)
nadir namer navar never newer nicer niter noter nuder