"ment" is a suffix sometimes used to convert a verb into a noun.
Examples:
establishment
atonement
bereavement
endearment
achievement
punishment
harassment
judgment
embellishment
enticement
inducement
nourishment
employment
management
environment
"ment" is a suffix sometimes used to convert a verb into a noun. Examples:accomplishmentaccompanimentachievementAdvertisementAgreementallotmentAppeasementassessmentatonementbasementbereavementcementcommitmentdeploymentdeportmentdevilmentdisbursementDisagreementelementembellishmentemploymentendearmentEnjoymentenlightenmentenrollmententertainmententicementenvironmentescarpmentestablishmentFulfillmentgarmentgovernmentharassmentimplementinducementinvestmentJudgmentmanagementmomentnourishmentparliamentpavementpaymentpunishmentStatementsupplementTemperamenttestamentTreatment
sediment
the ending of the word assignment is suffix
movement
basementagreementexcitementapartmentencouragementcement
'Ment' is not a word in its own right. Do you mean 'meant'. , otherwise it is a suffix to larger compound words.
Some words that end with the suffix "idle" include inflexible, credible, and indivisible.
Punishment, Amendment, Retirement
-ment
Words ending in tious:ambitiouscontentiousfacetiousfactiousfictitiousflirtatiousfractiouspretentiousscrumptioussuperstitious
awarenessbaldnessbusinesscarelessnessfearlessnessforgetfulnessforgivenessgoodnessgreatnesshappinesshelpfulnesshopelessnesskindnesslazinesslikenessneedinessquietnessrudenesssadnessstuffinessthoughtfulnessthoughtlessness
The suffix for replacement is -ment. -ment means a state of.