IPA: /ˈslɪpəri/
KK: /ˈslɪpəri/
Something that is difficult to hold or walk on because it causes sliding or slipping; it can also refer to someone who is not trustworthy or is tricky.
Be careful on the slippery floor after the rain.
Comparative: slippier
Superlative: slippiest
Slippery → It originates from the Old English 'sliper' (meaning smooth or slippery), which is related to the verb 'slipan' (meaning to slide or glide). The word describes a surface that is smooth enough to cause sliding or slipping.
Think of something that is 'smooth' ('sliper') and makes you 'slide' easily — that's why slippery means something that causes you to slide.