different between lightness vs thoughtlessness

English

Etymology 1

From Middle English lightnes, lightnesse, from Old English l?htnes; equivalent to light (“bright, luminous”, adjective) +? -ness (suffix forming nouns).

Noun

lightness (countable and uncountable, plural lightnesses)

1. (uncountable) the condition of being illuminated
2. (uncountable) the relative whiteness or transparency of a colour
3. (countable) The product of being illuminated.

Translations

Etymology 2

From Middle English lightnes, lightnesse,; equivalent to light (“not heavy”, adjective) +? -ness (suffix forming nouns).

Noun

lightness (uncountable)

1. The state of having little weight, or little force.
2. Agility of movement.
3. Freedom from worry.
4. Levity, frivolity; inconsistency.
   • , New York 2001, p.75:

     Seneca […] accounts it a filthy lightness in men, every day to lay new foundations of their life, but who doth otherwise?

Translations

References

Anagrams

• nightless, slightens

English

Etymology

thoughtless +? -ness

Pronunciation

• (UK) IPA^(key): /????tl?sn?s/, /????tl?sn?s/, /????tl?sn?s/
• (General American) enPR: thôt?l?s-n?s, thôt?l?s-n?s, thôt?l?s-n?s, IPA^(key): /???tl?sn?s/, /???tl?sn?s/, /???tl?sn?s/
• (cot–caught merger) enPR: thät?l?s-n?s, thät?l?s-n?s, thät?l?s-n?s, IPA^(key): /???tl?sn?s/, /???tl?sn?s/, /???tl?sn?s/

Noun

thoughtlessness (uncountable)

1. disregard for other's feelings
2. heedless disregard for the consequences of one's actions

Antonyms

• thoughtfulness

Translations