verb[with object] (usually cannot stomach)
Middle English: from Old French estomac, stomaque, via Latin from Greek stomakhos 'gullet', from stoma 'mouth'. The early sense of the verb was 'be offended at, resent' (early 16th century)
Remember that stomach ends with -ach.
If a noun ends in -ch and is pronounced -k, make the plural by adding an -s: (stomachs).