in English is:

sophistry

,

casuistry

,

fallacy

Mutations

Soft:dwyllresymeg
Nasal:nhwyllresymeg
Aspirate:thwyllresymeg

Use

y dwyllresymeg hon
fy nhwyllresymeg i
dy dwyllresymeg di
ei dwyllresymeg ef/o
ei thwyllresymeg hi
ein twyllresymeg ni
eich twyllresymeg chi
eu twyllresymeg nhw/hwy
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