Names #97, #819 · Viṣṇu Sahasranāma
सिद्धःsiddhaḥ
Siddha — appears 2 times in the stotram, each with its own meaning
Name #97
The ever-perfect, with nothing left to attain
From shloka 11 · chapter Matsya
अजः सर्वेश्वरः सिद्धः सिद्धिः सर्वादिरच्युतः ।
वृषाकपिरमेयात्मा सर्वयोगविनिःसृतः ॥
ajaḥ sarveśvaraḥ siddhaḥ siddhiḥ sarvādiracyutaḥ
vṛṣākapirameyātmā sarvayogaviniḥsṛtaḥ
Also in this shloka: ajaḥ · sarveśvaraḥ · siddhiḥ · sarvādiḥ · acyutaḥ · vṛṣākapiḥ · ameyātmā · sarvayogaviniḥsṛtaḥ
Name #819
The eternally accomplished
From shloka 88 · chapter Kṛṣṇa
सुलभः सुव्रतः सिद्धः शत्रुजिच्छत्रुतापनः ।
न्यग्रोधोऽदुम्बरोऽश्वत्थश्चाणूरान्ध्रनिषूदनः ॥
sulabhaḥ suvrataḥ siddhaḥ śatrujicchatrutāpanaḥ
nyagrodho'dumbaro'śvatthaścāṇūrāndhraniṣūdanaḥ
Also in this shloka: sulabhaḥ · suvrataḥ · śatrujit · śatrutāpanaḥ · nyagrodhaḥ · udumbaraḥ · aśvatthaḥ · cāṇūrāndhraniṣūdanaḥ