Adjective: jack shit and/or gibberish comes out. endless; almost seemingly pointless chatter that instead of reducing a situation on the contrary ESCALATES it and leaves one feeling extremely childish and plain DUMB for not being able to get oneself's point across.
tongue-tied, speechless,
wordless, feeble-minded, silent, soundless,
dimwitted, inarticulate...
Jenny was uncommunicative with certain IMPORTANT matter from her heart, unable to express it with words the
frustration left her
venting for the rest of the night.
