Ƙididdigar ƙididdiga, wanda kuma aka sani da ra'ayi na ra'ayi ko ma'anar magana, wani reshe ne na ilimin lissafi wanda ke nazarin alakar ma'ana tsakanin shawarwari (maganganun da suke ko dai na gaskiya ko na ƙarya). Ya damu da haɗin kai na ma'ana wanda ke ba da izinin gina ƙayyadaddun shawarwari daga mafi sauƙi, kamar "da," "ko," "a'a," da "idan-to." Ana amfani da ƙididdiga na ƙididdiga a kimiyyar kwamfuta, hankali na wucin gadi, falsafa, da sauran fagage don yin tunani game da gaskiyar maganganun da kuma tsara tsarin dabaru.