It is a word
circumference circumlocution circumvent circumstance circumnavigation circumjacent circumscribe circumpolar circumocular
The suffix of the word circumference is "-ence".
Words ending in tious:ambitiouscontentiousfacetiousfactiousfictitiousflirtatiousfractiouspretentiousscrumptioussuperstitious
Some words ending with the suffix "shion" are "fashion," "passion," and "cushion."
I believe what you are asking for is examples of words ending with the suffix "-city" such as: velocity veracity paucity
Some words ending with the suffix "ative" include: innovative, contemplative, informative, and authoritative.
Words ending with lity:abilityagilitybrutalitycentralitycivilityformalitygeneralityfutilityneutralitypersonalitypluralityrealitysenilitystabilitytranquilityutilityvitality
Port is not a suffix, it is a root word, and some words with port in them are transport, export, import, ect.
gonadotropic
retardant?
scientist geologist
unuasal