List of some of the main Latin radicals and prefixes found in Portuguese:
Radicals of Latin origin:
| Radical | Sense | Example |
| agri | field | farmer |
| ambi | both duplicity | ambiguous |
| arbori | tree | afforest |
| avi | bird | poultry farming |
| beli | war | belligerent |
| bi, bi | twice | biped, great grandfather |
| heat (i) | heat | calorimetry |
| captain (i) | head | decapitate |
| city | that kills | suicidal |
| Glue | who cultivates or inhabits | winery, agricultural |
| cruci | cross | crucify |
| culture | grow crops | beekeeping |
| curved | curved | curvilinear |
| ego | me | self-centeredness |
| equi | equal | equivalent |
| eve | age | medieval |
| fierce | that contains or produces | mammal |
| I am | who makes or produces | fridge |
| fide | faith | loyalty |
| for me | form | uniform |
| frater | brother | fraternal |
| escape | who runs away | centrifugal |
| I generate | that contains or produces | beneficial |
| herb | herb | herbicide |
| crazy | place | to locate |
| ludo | game | play therapy |
| mater | mom | maternal |
| dead | death | deadly |
| multi | much | multinational |
| omni | whole | omnipresent |
| pari | equal | parity |
| stop | that produces | oviparous |
| pater | father | paternal |
| suffer | foot | pedestrian |
| pisci | fish | psyculture |
| pluri | many | multicellular |
| rain | rain | pluvial |
| puer | child | childish |
| hip | four | quadrilateral |
| withdrew | straight right | rectilinear |
| to withdraw | sugar | sucrose |
| frog | soap | soapy |
| sesqui | one and a half | sesquipedalian |
| silvi | Forest | forestry |
| taur (i) | bull | taurine |
| tri | three | tricolor |
| umbra | shadow | dimness |
| uxor | wife | uxoricide |
| vermi | worm | vermifuge |
| bird | who eats | carnivore |
Latin prefixes:
| Prefix | Sense | Example |
| ab(abs) | removal | abstract |
| ad(a) | proximity, direction | adjazar |
| ambi | duplicity | ambidextrous |
| before | anteriority | predate |
| good | well, good success | bless |
| bi | two | bisexual |
| circum | move around | circumnavigation |
| cis | short position | cisalpine |
| with (with or with) | company | fight, collaborate, contemporary |
| against | opposition | contradict |
| in | origin, removal | deport |
| des | denial, separation, contrary action | disloyal, undo |
| in (en or in) | inward movement | bury |
| ex(es or e) | outward movement | export |
| extra | outside of | unofficial |
| in | denial | beardless, unhappy |
| infra | bellow | undersigned |
| inter | in between, middle position | to intervene |
| intra | inner position | intravenous |
| intro | inward movement | introduce |
| fair | together with | juxtapose |
| bad | bad | curse |
| ob | opposition | hinder |
| pain | almost | penultimate |
| per | move through | walk |
| pos | posterior position | postpone |
| pre | anteriority | predict |
| defer | Besides | preternatural |
| pro | anteriority, forward | proceed |
| re | backward movement again | curb |
| retro | backward movement | retroaction |
| semi | a half | semicircle |
| soto | inferior position | sotopor |
| sub | inferiority, from the bottom up | subscribe |
| super | top position | Superman |
| above | top position | above mentioned |
| trans | Besides | pierce |
| tri | three | tripartite |
| ultra | beyond limit | to surpass |
| vis (vice) | instead of | vice consul |
By Marina Cabral
Specialist in Portuguese Language and Literature
Brazil School Team
Grammar - Brazil School
Source: Brazil School - https://brasilescola.uol.com.br/gramatica/radicais-prefixos-latinos.htm