| gismo | (noun) a device or control that is very useful for a particular job | Synonyms: appliance, contraption, contrivance, convenience, gadget, gizmo, widget |
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| (noun) something unspecified whose name is either forgotten or not known | Synonyms: dojigger, doodad, doohickey, gimmick, gizmo, gubbins, thingamabob, thingamajig, thingmabob, thingmajig, thingumabob, thingumajig, thingummy, whatchamacallit, whatchamacallum, whatsis, widget |
| gist | (noun) the choicest or most essential or most vital part of some idea or experience | Synonyms: center, centre, core, essence, heart, heart and soul, inwardness, kernel, marrow, meat, nitty-gritty, nub, pith, substance, sum |
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| (noun) the central meaning or theme of a speech or literary work | Synonyms: burden, core, effect, essence |