What is the opposite of most informal?

Need antonyms for most informal? Here's a list of opposite words from our thesaurus that you can use instead.

Contexts Opposite of superlative for having a relaxed, friendly, or unofficial style, manner, or nature Opposite of superlative for used in or suitable for everyday conversation rather than formal or official contexts Opposite of superlative for having or showing a casual attitude towards established form, custom, or rules Adjective ▲ Opposite of superlative for having a relaxed, friendly, or unofficial style, manner, or nature dressiest stiffest rigidest smartest chicest trendiest snazziest nattiest snappiest spiffiest sharpest classiest fliest sassiest fanciest toniest swishest kickiest ritziest most formal most official most constrained most ceremonious most conventional most buttoned-up most fashionable most stylish most elegant most modish most dashing most sophisticated most elaborate Adjective ▲ Opposite of superlative for used in or suitable for everyday conversation rather than formal or official contexts sagest wisest cleverest best-read brainiest most bookish most learned most literary most scholarly most erudite most cultured most intellectual most knowledgeable most academic most cultivated most civilisedUK most civilizedUS most literate most studious most pedantic most intelligent most esoteric most sagacious most recondite most skilled most versed most illuminated most donnish most sophisticated most discerning most cerebral most enlightened most sapient most educated most expert Adjective ▲ Opposite of superlative for having or showing a casual attitude towards established form, custom, or rules most ceremonial most orthodox most regular most routine Find more words! 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Use our Antonym Finder Nearby Words most informational most informative most informatory most informed most infrasonic most infrequent most influential most inflexibly most inflexible most inflated most inflammatory most inflammable