Inclined to guess or characterized by guessing; based on conjecture rather than facts.
From 'guess' plus the Latin-derived suffix '-ive' (from Latin '-ivus'). This suffix creates adjectives meaning 'inclined to' or 'relating to' the root concept.
The '-ive' suffix (as in 'creative,' 'passive,' 'defensive') comes from Latin and gives English a way to describe qualities or tendencies—'guessive' is a rare but logically-formed word showing how productive these ancient suffixes remain.
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