probably or almost certainlyShe took off her shoes, doubtless because her feet hurt.
probably or almost certainlyHe will doubtless try to persuade his colleagues.
I'll certainly do all I can to help.
She knew that with enough dedication and work she would surely pass the course.
There'll be the usual inquiry, of course.
I truly never minded caring for him.
He is undoubtedly a great player
without doubt, , ,
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in the sense of of course
certainlyThere'll be the usual inquiry, of course.
in the sense of presumably
one supposes or guessesThis spear is presumably the murder weapon.
in the sense of surely
without doubtShe knew that with enough dedication and work she would surely pass the course.
Video: pronunciation of 'doubtless'
doubtless 的词库—— 柯林斯 英语词库
Life on the edge