wimp

Short definition from Wiktionary

Noun

1. 1
   Someone who lacks confidence or courage, is weak, ineffectual, irresolute and wishy-washy.
2. 2
   Alternative letter-case form of WIMP.
3. 3
   Acronym of weakly interacting massive particle.
4. 4
   Acronym of window, icon, menu, pointer, a graphical interface paradigm.
5. 5
   Acronym of window-icon-mouse program.

Verb

1. 1
   To behave submissively.
2. 2
   To make (something) weak or wimpy.

Adjective

1. 1
   Weak, wimpy.

Proper noun

1. 1
   Initialism of Windows, Internet Information Services, MySQL/MariaDB, and PHP/Perl/Python.