憎らしい

1. Origins, structure, and basic meaning

• Structure: 憎らしい(にくらしい) is an い-adjective for someone or something felt to be annoying or hateful.
• Basic usage: It marks degree in 憎らしいほど and continues adverbially in 憎らしくも.

2. Common pitfalls and similar expressions

• Strength of feeling
  • Context determines whether the feeling is mildly annoying or strongly hateful.
• Inflection
  • It stays 憎らしい before a noun and changes to 憎らしく for an adverbial connection.