sincerest
Deepest in earnestness
Sincerest is the superlative form of sincere—the most genuine, heartfelt, or earnest.
The word appears most often in formal expressions of sentiment: Please accept my sincerest apologies, With sincerest thanks.
These phrases have become somewhat formulaic, though they still signal deeper feeling than ordinary thanks or sorry.
Verified as original
- honestFree from deception
- truthfulAccurate and sincere
- unfeignedAuthentically felt, not pretended
- heartfeltDeeply and sincerely meant
wholehearted · earnest · real · true · pure · undisguised · unpretentious · transparent
Intensely and sincerely felt
- ardentIntensely enthusiastic or devoted
- passionateIntensely emotional or enthusiastic
- dedicatedWholly committed to something
- committedFirmly pledged or bound
serious · intense · zealous · staunch · resolute · determined · unwavering · steadfast
Moderately heated, or friendly
- tenderSoft or sore
- affectionateShowing warm regard
- lovingFeeling deep affection
- compassionateShowing concern for sufferers
empathetic · touching · moving · emotional · soulful · caring · fond · kind
Far from surface
- meaningfulHaving purpose or significance
- thoughtfulShowing careful consideration
- reflectiveCasting back light
- penetratingPassing into or through
substantive · weighty · serious · considered · solemn · intense · abiding · enduring
authentic
Verified as original
heartfelt · wholehearted · earnest · real · true · pure · undisguised · unpretentious · transparent · straightforward
fervent
Intensely and sincerely felt
- ardentIntensely enthusiastic or devoted
- passionateIntensely emotional or enthusiastic
- dedicatedWholly committed to something
committed · serious · intense · zealous · staunch · resolute · determined · unwavering · steadfast · diligent
warm
Moderately heated, or friendly
- tenderSoft or sore
- affectionateShowing warm regard
- lovingFeeling deep affection
compassionate · empathetic · touching · moving · emotional · soulful · caring · fond · kind · sympathetic
deep
Far from surface
- meaningfulHaving purpose or significance
- thoughtfulShowing careful consideration
- reflectiveCasting back light
penetrating · substantive · weighty · serious · considered · solemn · intense · abiding · enduring · lasting
- yours sincerelyEpistolary sign-off phrase
- sincere apologyGenuine expression of regret
- sincere thanksGenuine expression of appreciation