/ ɪnˈtɜːmɪnəbl; NAmE -ˈtɜːrm-/ adjective
lasting a very long time and therefore boring or annoying
SYN endless :
an interminable speech / wait / discussion
The drive seemed interminable.
► in·ter·min·ably / -əbli; NAmE / adverb :
The meeting dragged on interminably.
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WORD ORIGIN
late Middle English : from Old French , or from late Latin interminabilis , from in- not + terminare (from terminus end, boundary).