Word: selfmates
Part of speech: Noun
Syllables: self
mates
Definition: Plural of selfmate. A chess problem in which the white player, moving first, must force the black player to deliver checkmate within a specified number of moves.
Morphemes:
Affix: self-
Language: en
PoS: Prefix
Meaning: of, by, in or with oneself or itself
Affix: mate
Language: en
PoS: Verb
Meaning: clip of checkmate; a chess move constituting an inescapable and indefensible attack on the opponent's king
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).