Words where both the UN- form and the IN- form are valid — the two words do not always mean the same thing with definitions
88 entries
| FRONT | WORD | BACK | PARTNER | DEFINITION |
|---|---|---|---|---|
| BDFGHJLMNPRST | UN | IS | IN | [o. -S] · one |
| JP | UNTO | — | INTO | [p.] · to |
| — | UNAPT | — | INAPT | [a.] · not apt + / [x] { inapt unapt § inaptly } |
| — | UNARM | S | INARM | [v. -ED, -ING, -S] · to disarm |
| — | UNBOX | — | INBOX | [v. -ED, -ING, -ES] · to remove from a box |
| — | UNCUS | — | INCUS | [n. -CI] · a hook-shaped~ anatomical part |
| — | UNDUE | — | INDUE | [a.] · exceeding what is appropriate or normal |
| — | UNFIX | T | INFIX | [v. -FIXED or -FIXT, -FIXING, -FIXES] · to unfasten |
| — | UNGOT | — | INGOT | [a.] · ungotten «not obtained» / [x] { ungot ungotten } |
| B | UNION | S | INION | [n. -S] · a number of persons, parties, or political entities united for a common purpose |
| — | UNLAY | S | INLAY | [v. -LAID, -LAYING, -LAYS] · to untwist |
| R | UNLET | — | INLET | [a.] · not rented |
| S | UNSET | S | INSET | [v. -SET°, -SETTING, -SETS] · to unsettle |
| — | UNBORN | — | INBORN | [a.] · not born + |
| — | UNBRED | — | INBRED | [a.] · being not bred + |
| — | UNCAGE | DS | INCAGE | [v. -CAGED, -CAGING, -CAGES] · to release from a cage |
| — | UNCASE | DS | INCASE | [v. -CASED, -CASING, -CASES] · to remove from a case |
| — | UNCLIP | S | INCLIP | [v. -CLIPPED, -CLIPPING, -CLIPS] · to remove a clip from |
| — | UNDIES | — | INDIES | [n.] · underwear / [x] { underwear undies § underwears } |
| — | UNFOLD | S | INFOLD | [v. -ED, -ING, -S] · to open something that is folded |
| — | UNLACE | DS | INLACE | [v. -LACED, -LACING, -LACES] · to unfasten the laces of |
| — | UNMESH | — | INMESH | [v. -ED, -ING, -ES] · to disentangle |
| — | UNSEAM | S | INSEAM | [v. -ED, -ING, -S] · to open the seams of |
| — | UNSTEP | S | INSTEP | [v. -STEPPED, -STEPPING, -STEPS] · to remove from a socket |
| — | UNSURE | — | INSURE | [a.] · not sure + |
| — | UNWIND | S | INWIND | [v. -WOUND, -WINDING, -WINDS] · to reverse the winding of |
| — | UNWRAP | S | INWRAP | [v. -WRAPPED, -WRAPPING, -WRAPS] · to remove the wrapping from |
| — | UNAPTLY | — | INAPTLY | [b.] · not aptly + / [x] { inapt § inaptly unaptly } |
| — | UNCIVIL | — | INCIVIL | [a.] · not civil + / [x] { incivil uncivil } |
| — | UNCLASP | S | INCLASP | [v. -ED, -ING, -S] · to free from a clasp |
| — | UNCLOSE | DS | INCLOSE | [v. -CLOSED, -CLOSING, -CLOSES] · to open |
| — | UNCROSS | — | INCROSS | [v. -ED, -ING, -ES] · to change from a crossed position |
| — | UNEARTH | S | INEARTH | [v. -ED, -ING, -S] · to dig up |
| — | UNFANCY | — | INFANCY | [a.] · not fancy + |
| — | UNFUSED | — | INFUSED | [a.] · being not fused + |
| — | UNGROUP | S | INGROUP | [v. -ED, -ING, -S] · to separate from a group (=ungroup ungrouping ungroups) |
| — | UNHUMAN | — | INHUMAN | [a.] · not human |
| — | UNNERVE | DS | INNERVE | [v. -NERVED, -NERVING, -NERVES] · to deprive of courage |
| — | UNQUIET | S | INQUIET | [a. -ETER, -ETEST] · not quiet + / ----- [n. -S] · a state of unrest |
| G | UNSIGHT | S | INSIGHT | [v. -ED, -ING, -S] · to prevent from seeing |
| — | UNSTATE | DS | INSTATE | [v. -STATED, -STATING, -STATES] · to deprive of status |
| — | UNSWEPT | — | INSWEPT | [a.] · being not swept + |
| — | UNTONED | — | INTONED | [a.] · lacking in muscular definition |
| — | UNTWINE | DS | INTWINE | [v. -TWINED, -TWINING, -TWINES] · to separate the twisted or tangled parts of |
| — | UNTWIST | S | INTWIST | [v. -ED, -ING, -S] · to untwine «to separate the twisted or tangled parts of» |
| — | UNVOICE | DS | INVOICE | [v. -VOICED, -VOICING, -VOICES] · to deprive of voice or vocal quality / [x] { devoice devoiced devoices devoicing unvoice unvoiced unvoices unvoicing § unvoiced } |
| — | UNWEAVE | S | INWEAVE | [v. -WOVE, -WOVEN, -WEAVING, -WEAVES] · to undo something woven |
| — | UNARCHED | — | INARCHED | [a.] · being not arched + |
| — | UNCREATE | DS | INCREATE | [v. -ATED, -ATING, -ATES] · to deprive of existence |
| — | UNDENTED | — | INDENTED | [a.] · being not dented + |
| — | UNDEVOUT | — | INDEVOUT | [a.] · not devout + / [x] { indevout undevout } |
| — | UNDOCILE | — | INDOCILE | [a.] · not docile + / [x] { indocile undocile } |
| — | UNEDIBLE | — | INEDIBLE | [a.] · not edible / [x] { inedible unedible § inedibly } |
| — | UNEDITED | — | INEDITED | [a.] · being not edited + / [x] { inedited unedited } |
| — | UNEXPERT | — | INEXPERT | [a.] · not expert |
| — | UNFAMOUS | — | INFAMOUS | [a.] · not famous + |
| — | UNFILLED | — | INFILLED | [a.] · being not filled + |
| — | UNFLEXED | — | INFLEXED | [a.] · being not flexed + |
| — | UNFOLDER | S | INFOLDER | [n. -S] · one that unfolds |
| — | UNFORMED | — | INFORMED | [a.] · being not formed + |
| G | UNFOUGHT | — | INFOUGHT | [a.] · being not fought + |
| — | UNGROUND | — | INGROUND | [a.] · being not ground + |
| — | UNSPHERE | DS | INSPHERE | [v. -SPHERED, -SPHERING, -SPHERES] · to remove from a sphere |
| — | UNSTABLE | R | INSTABLE | [a. -BLER, -BLEST] · not stable + / [x] { instable unstable unstabler unstablest } |
| — | UNSWATHE | DS | INSWATHE | [v. -SWATHED, -SWATHING, -SWATHES] · to unbind |
| — | UNTENDED | — | INTENDED | [a.] · being not tended + |
| — | UNTHRONE | DS | INTHRONE | [v. -THRONED, -THRONING, -THRONES] · to remove from a throne |
| — | UNTITLED | — | INTITLED | [a.] · being not titled + |
| — | UNTURNED | — | INTURNED | [a.] · being not turned + |
| — | UNVERSED | — | INVERSED | [a.] · being not versed + |
| — | UNVESTED | — | INVESTED | [a.] · being not vested + |
| — | UNVIABLE | — | INVIABLE | [a.] · not viable + / [x] { inviable unviable § inviably } |
| — | UNWALLED | — | INWALLED | [a.] · being not walled + |
| — | UNAPTNESS | — | INAPTNESS | [n. -ES] · not aptness + / [x] { inaptness unaptness § inaptnesses unaptnesses } |
| — | UNBOUNDED | — | INBOUNDED | [a.] · being not bounded + |
| — | UNCAPABLE | — | INCAPABLE | [a.] · not capable + / [x] { incapable uncapable } |
| — | UNCORRUPT | — | INCORRUPT | [a.] · not corrupt + / [x] { incorrupt uncorrupt } |
| — | UNCURABLE | — | INCURABLE | [a.] · not curable + |
| — | UNCURABLY | — | INCURABLY | [b.] · not curably + / [x] { incurably uncurably } |
| — | UNCURIOUS | — | INCURIOUS | [a.] · not curious + / [x] { incurious uncurious } |
| — | UNCURRENT | — | INCURRENT | [a.] · not current |
| — | UNFERTILE | — | INFERTILE | [a.] · not fertile + / [x] { infertile unfertile } |
| — | UNHUMANLY | — | INHUMANLY | [b.] · not humanly + |
| — | UNSHEATHE | DS | INSHEATHE | [v. -SHEATHED, -SHEATHING, -SHEATHES] · to draw or pull out (something, esp~ a weapon) from a sheath or other covering |
| — | UNSOURCED | — | INSOURCED | [a.] · being not sourced + |
| — | UNSTARRED | — | INSTARRED | [a.] · being not starred + |
| — | UNTREATED | — | INTREATED | [a.] · being not treated + |
| — | UNWROUGHT | — | INWROUGHT | [a.] · being not wrought + |
88 entries
Copyright © 2026 Mitch Bayersdorfer · AGPL-3.0 · Thanks to Joe Petree for his definitions for these lists. · Detailed Attributions