Faltering; halting; awkward — describes speech or actions that are unsteady, hesitant, or clumsy.
彼は日本語がまだたどたどしいが、一生懸命に話している。
His Japanese is still halting, but he speaks with effort.
たどたどしい手つきで赤ちゃんにミルクをあげる母親の姿が印象的だった。
The mother feeding her baby with awkward, unsteady motions was impressive.
初めての発表で声がたどたどしかったが、内容はよくまとまっていた。
Her voice was faltering in her first presentation, but the content was well organized.