This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. superlative form of tender: most tender.

"My father grieved with exceeding grief to hear these words; but reared me in tenderest fashion and educated me excellently well until my fifteenth year was told."

gentlest    warmest    heartfelt    fatherly    brotherly    filial    kindly    true    sisterly    profoundest