Fashionable, capable, canable, suitable, remarkable.
Some words with the suffix able include: unable, believable, and imaginable.
affordablebelievablecapabledetachabledelectabledrinkableenforceableflammablelaughablereliableremovableretractablereturnablesinkablesuitabletreatableremarkableusable
agree-ablelove-ableExcite-able
Unknowable is one. UN and ABLE.
A "suffix" occurs ate the END of a word. Therefore is is impossible for a suffix to START a word, that is the job of a "prefix". This means your question is nonsense and can not be answered.
Some words that have the suffix as morph are:metamorphosisbimorphbimorphemicbimorphsbiomorphicdimorphdimorphicdimorphism
Words with the suffix ance:acceptanceappearancearroganceassistanceclearancecompliancecontinuancedisappearancedistanceeleganceentrancegrievancemaintenanceperformancepredominanceresistancetolerancesubstancetemperanceviligance
Some words that end with the suffix 'fy' are:acidify.amplify.beautify.belfry.calcify.certify.clarify.classify.detoxify.dignify.electrify.emulsify.falsify.fortify.glorify.horrify.identify.intensify.justify.leafy.liquefy.magnify.mystify.notify.nullify.objectify.pacify.purify.qualify.quantify.ratify.rectify.sanctify.solidify.terrify.testify.typify.unify.verify.versify.vilify.vivify.
singer dancer peacemaker helper awesomer lover snacker cheerer funnier
Some words that end or with suffix cain: cocain. marocain.
-idle isn't a suffix. There are words that end with -idle, like bridle, but it isn't a suffix.
Some words with the suffix -cene are "obscene," "lucrative," and "innocence."