Synonyms of open-mouthed

open-mouthed

adjective

ˌō-pən-ˈmau̇t͟hd 

variants also openmouthed

as in wondering

filled with amazement or wonder

the stunning view from the mountaintop left us open-mouthed and at a loss for words

Synonyms & Similar Words

• wondering
• amazed
• astonished
• bewildered
• surprised
• awed
• marveling
• awestruck
• dumbfounded
• stunned
• astounded
• flabbergasted
• startled
• puzzled
• bemused
• overwhelmed
• staggered
• stupefied

Antonyms & Near Antonyms

• unimpressed
• indifferent
• disinterested
• uninterested
• unconcerned
• impassive
• dispassionate
• bored
• unemotional
• incurious
• jaded
• emotionless

Example Sentences

Recent Examples of open-mouthed

Played by a Colman Domingo who is done up to look the most wax figurine of them all in a shellacking of makeup, prosthetics, and colored contacts, Joe is always either giving an avaricious open-mouthed leer or a cold-eyed glare. — Alison Willmore, Vulture, 23 Apr. 2026

Around his head hovers a cluster of disembodied faces — creepy alt-Altmans, their expressions ranging from anger to open-mouthed woe. — Cath Virginia, The Verge, 11 Apr. 2026

The camera panned to an open-mouthed Johansson standing in the wings. — Lara Walsh, InStyle, 19 Jan. 2026

The oldest of three brothers, he was followed into professional football by Bob, who played for Halifax Town, Middlesbrough, Notts County and Southend United, and then by Frank, who, from a very early age, could do things with a ball that would leave his siblings open-mouthed. — Oliver Kay, New York Times, 8 Oct. 2025