According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 5 words with the pattern RI------R. That is, nine letter words with 1st letter R and 2nd letter I and 9th letter R. In alphabetical order, they are:

ricketier

ridiculer

rigsdaler

ringsider

ritonavir

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 6 words with the pattern R-D----ER. That is, nine letter words with 1st letter R and 3rd letter D and 8th letter E and 9th letter R. In alphabetical order, they are:

redbaiter

redeliver

redoubler

redresser

ridiculer

rodfisher

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 18 words with the pattern --DI-U---. That is, nine letter words with 3rd letter D and 4th letter I and 6th letter U. In alphabetical order, they are:

aedicules

dedimuses

fidibuses

indirubin

lodiculae

lodicules

pedicular

pediculus

pedicured

pedicures

radicular

radicules

ridiculed

ridiculer

ridicules

tediously

undiluted

vidimuses

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 106 words with the pattern ------LER. That is, nine letter words with 7th letter L and 8th letter E and 9th letter R. In alphabetical order, they are:

assembler

batfowler

belittler

biofouler

busheller

canceller

canoodler

caracoler

carpooler

catcaller

centraler

channeler

chiseller

compeller

concealer

congealer

cudgeller

curtailer

decoupler

despoiler

dismaller

dispeller

distiller

driveller

embezzler

embroiler

enameller

enfeebler

enkindler

entangler

epistoler

frivoller

fulfiller

genteeler

gospeller

groveller

hosteller

hummeller

indweller

initialer

installer

instiller

inveigler

joyfuller

logroller

marceller

marshaler

miscaller

misdealer

netballer

norseller

outhauler

overruler

pasquiler

patroller

penciller

pendicler

possibler

postiller

potboiler

potwaller

prevailer

propeller

quarreler

redoubler

remodeler

rentaller

resembler

ridiculer

rigsdaler

scheduler

scrabbler

scrambler

scribbler

scuddaler

sensibler

shoveller

signaller

sniveller

snorkeler

specialer

sprinkler

squabbler

squiggler

stenciler

straddler

straggler

strangler

struggler

subdealer

subsoiler

teaseller

throttler

trammeler

traveller

tricycler

troweller

tunneller

unbundler

uncoupler

unriddler

unstabler

victualer

wassailer

weaseller

woefuller