Synonyms of 'nod'
1 agreeDictionary, concur, assent
'Are you okay?' I asked. She nodded and smiled.
2 inclineDictionary, bob, bow
She nodded her head in understanding.
3 signalDictionary, indicate, motion
He lifted his end of the canoe, nodding to me to take up mine.
1 signalDictionary, sign, motion
Then, at a nod from their leader, they all sat.
idiom:give someone the nod
phrasal verbnod off
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If you acknowledge someone, for example by moving your head or smiling, you show that you have seen and recognized them.
He saw her but refused to even acknowledge her.
He smiled in acknowledgement and gave her a bow.
Thesaurus for nod from the Collins English Thesaurus
If you nod , you move your head downwards and upwards to show that you are answering 'yes' to a question , or to show agreement, understanding , or approval .