IPA: /səˈlɪtəˌrɛli/
KK: /sɑːˈlɪtərɪli/
In a way that involves being alone or without others.
She prefers to work solitarily in her studio, away from distractions.
Solitarily → It is formed from "solus" (meaning alone) and the suffix "-ly" (meaning in a manner of). The word "solitarily" means in a manner of being alone or by oneself.
Think of being 'alone' ('solus') and doing something 'in a manner' ('-ly'). This helps you remember that 'solitarily' means doing something by oneself.