- hatachi zengo (二十歳前後): about twenty
- zen'i (善意): a favourable sense, good intentions; [Law] good faith, bona fides
- zen'i no (善意の): well-intentioned, bona fide
- zen'in (全員): all (the) members, the whole crew
- zen'in itchi de (全員一致で): unanimously
- zengan no (前癌の): precancerous ~
- zenganshōjō (前癌症状): precancerosis
- zengen (漸減): gradual decrease
- zengen o torikesu (前言を取り消す): to withdraw one's previous statement
- zengen suru (漸減する): to decrease gradually, to diminish gradually
- zengi (前戯): foreplay
- zengo (前後): front and rear, before and after; order, sequence; about, or so
- zengo fukaku to naru (前後不覚となる): to lose one's consciousness
- zengo no misakai naku (前後の見境なく): recklessly
- zengo o mimawasu (前後を見回す): to look around one
- zengo o wasureru (前後を忘れる): to be beside oneself with
- zengosaku (善後策): remedial measures
- zengun (全軍): the whole army/force
- zengō (前号): the preceding number
- zenhan (前半): the first half
- zenhōi (全方位): all-directional ~
- zenin (是認): approval
- zenin suru (是認する): to approve, to admit
- zenji (漸次): gradually, little by little, by degrees
- zenjidō no (全自動の): automatic
- zenjinmitō no (前人未到の): unprecedented, original, unexplored, virgin
- zenjitsu (前日): the day before, the previous day, the preceding day
- zenjutsu no (前述の): the above(-mentioned), the foregoing, the aforesaid
- zenjō (禅譲): [政権の] abdication
- zenjō no (前条の): as mentioned in the preceding article
- zenka (前科): a previous offense; a criminal record
- zenkai (全快): a complete recovery
- zenkai (前回): the last time/occasion
- zenkai itchi de (全会一致で): unanimously, with one consent
- zenkai no (前回の): last, preceding
- zenkai suru (全壊する): to be completely destroyed
- zenkai suru (全快する): to get quite well again, to recover completely
- zenkamono (前科者): an ex-convict
- zenkan (全巻): the whole volume/reel
- zenkasanpan (前科三犯): a man with three previous convictions
- zenkei (全景): a complete view, a panoramic view, a panorama
- zenkei (前景): the foreground
- zenkei no (前掲の): shown above, above-mentioned
- zenkeisho (前掲書): op. cit.
- zenken o inin suru (全権を委任する): to invest [a person] with full powers
- zenkentaishi (全権大使): an ambassador plenipotentiary
- zenki (前期): the first term, the former term, the first semester, the first half year
- zenki no (前記の): above-mentioned, above, aforesaid
- zenkoku (全国): the whole country
- zenkoku kara (全国から): from all over the country
- zenkoku ni (全国に): all over the country
- zenkokuku (全国区): the national constituency
- zenkokukōkōyakyūtaikai (全国高校野球大会): the National High-School Baseball Tournament
- zenkokuteki (全国的): national, nationwide
- zenkō (全校): the whole school
- zenkō (前項): the preceding clause/paragraph
- zenkō (善行): good conduct, a good deed
- zenkōseito (全校生徒): all the students of a school
- zenmai (ぜんまい): a (main) spring, a hairspring
- zenmai (薇): a flowering fern
- zenmaijikake no (ぜんまい仕掛の): clockwork
- zenmengunshuku (全面軍縮): total disarmament
- zenmenkōwa (全面講和): an overall peace
- zenmensensō (全面戦争): an all-out war
- zenmenteki (全面的): all-out, overall, general
- zenmetsu (全滅): annihilation, total destruction
- zenmetsu suru (全滅する): to be annihilated, to be stamped out
- zenmon no tora kōmon no ōkami (前門の虎後門の狼): to find oneself between the devil and the deep sea, to find oneself between Scylla and Charybdis
- zennichi suto (全日スト): a full-day strike
- zennichiseikōkō (全日制高校): a full-time (senior) high school
- zennin (善人): a good man, a virtuous man
- zennin no (前任の): former [mayor/governor etc.]
- zenninsha (前任者): the predecessor
- Zennippon (全日本): all-Japan
- zennō (全能): omnipotence
- zennō (前納): payment in advance
- zennō (前脳): the prosencephalon, the forebrain
- zennō no (全能の): omnipotent, almighty
- zennō suru (全納する): to pay in full
- zennō suru (前納する): to pay in advance, to prepay