Magento 2: How to add spellchecker in tinyMc editor in custom module?

I am using tiny editor in custom field in frontend form. I want to use spellchecker in this editor.

My code:-

    < ?php echo $block->escapeHtml(__('Description')) ?>:

        < ?= /* @noEscape */  $product['description']?>
            
    

Please guide me to do this.

Thanks