unmerklich
Translation
imperceptible, unnoticeable, subtle, slight
Examples
Die Veränderung war fast unmerklich.
The change was almost imperceptible.
Er nickte unmerklich mit dem Kopf.
He gave an imperceptible nod.
Grammar Patterns
((as an adjective)) used as an adjective An imperceptible improvement occurred.
Similar Words
Synonyms: imperceptible, subtle, slight; Antonyms: noticeable, obvious, distinct
Etymology
From the prefix un- ('not') + the verb merken ('to notice') + the suffix -lich ('-ly', '-able'). Literally 'not-notice-able'.
Memory Tips
Think of something that doesn't leave a 'mark' (from 'merken'), so it's 'un-mark-ly' -> unnoticeable.