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English ache
Old English acan (inherited)
Old English æċe (mention)
English breach (mention)
English break (mention)
English break (mention)
English ache for (link)
English hurt (link)
English lovage (link)
English smallage (link)
Middle English aken (inherited)
Middle English ache (mention)
Middle English ache (inherited)
French ache (cognate)
Old French ache (derived)
North Frisian akelig (cognate)
North Frisian æklig (mention)
West Frisian aaklik (cognate)
Proto-Germanic *akaną (inherited)
Proto-Germanic *akiz (derived)
Proto-Indo-European *h₂eg- (derived)
Latin apium (derived)
Low German aken (cognate)
Low German äken (mention)
Dutch akelig (cognate)

English long (link)
English ach (alter)
English headache (compound)
English acheful (suffix)
English toothache (compound)
English bellyache (compound)
English backache (compound)
English lovage (mention)
English earache (compound)
English ake (mention)
English heartache (affix)
English stomachache (compound)
English achy (suffix)
English acheth (suffix)
English neckache (compound)
English smallage (affix)
English achelike (suffix)
English acheless (suffix)
English faceache (compound)
English ballache (compound)
English boneache (compound)
English tummyache (compound)
English achest (suffix)
English psychache (compound)
English achage (affix)
English dickache (compound)
English tailache (compound)
English achesome (suffix)
English unache (prefix)
English sideache (compound)
English throatache (compound)
German heikel (cognate)
Ancient Greek ἄγος (cognate)
Sanskrit आगस् (cognate)