noun

sleepiness

sleepiness, drowsiness

A feeling of sleepiness came over me.

A feeling of sleepiness came over me.

((sleepiness)) the state of being tired and wanting to sleep. The lecture induced a feeling of sleepiness.

Synonyms: drowsiness, tiredness, lethargy

From 'sleepy' + the noun-forming suffix '-ness'. The state of being sleepy. Note the correct spelling is 'sleepiness'.

Remember the spelling rule: when adding a suffix to a word ending in 'y', the 'y' often changes to an 'i' (e.g., happy -> happiness).

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.