oldster is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

Meanings

Noun (COUNTABLE)

(colloquial) Someone who is old.
• Synonym: geriatric, old timer, senior citizen, Thesaurus:old person
(nautical) A midshipman of four years' standing; a master's mate.

oldster is a Scrabble valid word

oldster

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 00 points

oldster is an iScramble, QuickWords valid word

oldster

• The word is valid in iScramble ✔
• The word is valid in QuickWords ✔
• 00 points

Same letters words (Anagrams)

• DROLETS
• LORDEST
• RODLETS

Same letters plus one

• DELATORS
• DELTOROS
• DESULTOR
• DOTTRELS
• DROLLEST
• DROPLETS
• LEOTARDS
• LODESTAR
• LORDLETS
• OLDSTERS
• RESTHOLD
• SNORTLED
• STEMLORD
• STOLIDER
• STROLLED
• STROWLED
• SWORDLET
• TELFORDS
• TODDLERS
• TRESOLDI
• WORDLETS

Same letters minus one

• DESLOT
• DORSEL
• DORSET
• DOSTER
• DOTELS
• DOTERS
• DROLET
• DROSTE
• ELRODS
• LODERS
• LOSTER
• OLDERS
• OLDEST
• OSTLER
• RESLOT
• RESOLD
• RETOLD
• RODEST
• RODLET
• ROSTED
• ROSTEL
• SDEROT
• SOLDER
• SOLERT
• SORTED
• STEROL
• STOLED
• STORED
• STRODE
• STROLE
• TORSED
• TORSEL
• TRDLOS