formidability adj.強大的；可怕的；難對付的formication (n.) formicary (n.) formicant (adj.) formic (adj.) formerly (adv.) former (adj.) formative (adj.) formation (n.) format (n.) formally (adv.) formalize (v.) formality (n.) formalistic (adj.) formalism (n.) formaldehyde (n.) formal (adj.) formal adj. 正式的；拘謹的；有條理的 n. 正式的社交活動；夜禮服 n. (Formal)人名；(法)福馬爾formable (adj.) form (n.)