participial /ˌpɑː(ɹ)tɪˈsɪpi.əl/noun 2adjective 1forms 1 noun2 •A participial word. •(old-fashioned) A non-finite verb.[…] the verb has two forms, which […] are called Participials, namely, (a) The Infinitv […] (b) The Participle […] . — 1870 adjective1 •Of, relating to, or being a participle. formsparticipials