Capable of being admitted or allowed; acceptable for entry or acceptance.
From Latin admittere plus -ible, an alternate form of -able meaning 'capable of being.' The -ible suffix, from Latin -ibilis, is less common in modern English but appears in words like sensible and horrible.
Admittible and admissible both come from admittere but use different suffix patterns: -tible versus -ssible. The double-s in admissible was influenced by French spelling, while admittible shows the more direct Latin path—both are correct historically, but admissible won!
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