Word: aftmost
Part of speech: Adjective
Syllables: aft
most
Definition: Furthest aft, most sternward, as far back as possible.
Morphemes:
Affix: aft
Language: en
PoS: Adverb
Meaning: At, near, or towards the stern of a vessel (with the frame of reference within the vessel).
Affix: -most
Language: en
PoS: Suffix
Meaning: Furthest; -est; used to form superlatives of certain adjectives, especially directional and inherently-comparative ones.