informal

a.非正式的

inflated, inflation, inflationary, inflect, inflected, inflection (also inflexion), inflectional, inflexibility, inflexible, inflexibly, inflict, infliction, inflorescence, inflow, influence, influence on, influential, influenza, influx, inform, informality, informally, informant, information, informative, informed, informer, infra, infra dig, infra-, infra-red, infraction, infrared, infrastructure, infrequency, infrequent, infrequently, infringe, infringement, infuriate,