She tiptoed round the house so as not to wake anyone. Here 'to wake' is a/an -

She tiptoed round the house so as not to wake anyone. Here 'to wake' is a Non-finite verb.• A non-finite verb is a verb form that does not show tense.- Most non-finite verbs found in English are infinitives, participles and gerunds.- আলোচ্য বাক্যে, ‘to wake’ কোনো tense নির্দেশ করেনা।- তাই, এটা Infinitive এবং non-finite verb.