lengthy (adj.)

• boring
• colossal
• dragging
• drawn-out
• dull
• elongate
• elongated
• endless
• extended
• extensive
• far-flung
• gangling
• gangly
• garrulous
• giant
• gigantic
• interminable
• lank
• lanky
• leggy
• long
• long-legged
• long-winded
• longish
• loquacious
• padded
• prolix
• prolonged
• protracted
• rangy
• sesquipedalian
• statuesque
• talkative
• tall
• tedious
• unrelenting
• verbose
• windy
• wordy