plausible

adjectives

apparently reasonable and valid, and truthful

"a plausible excuse"

plausible

is derived from

is derived from

antonym

is similar to

capable of being supported by argument

is similar to

having only superficial plausibility

"glib promises"; "a slick commercial"

see also

capable of being believed

"completely credible testimony"; "credible information"

given to or characterized by presenting specious arguments

"a plausible liar"

plausible

is similar to

lacking sincerity

"a charming but thoroughly insincere woman"; "their praise was extravagant and insincere"