凪ぐ[nagu] to become calm
夜凪[yonagi] evening calm
神凪[kannagi] medium
朝凪[asanagi] morning calm (over the ocean)
夕凪[yuunagi] evening calm

逆凪[sakanagi] backlash (after use of 'magic')
水凪鳥[mizunagidori] petrel (esp. petrels of family Procellariidae)
大水凪鳥[oomizunagidori] streaked shearwater (species of seabird, Calonectris leucomelas)
初凪[hatsunagi] first lull of the year

御食い初め[okuizome] weaning ceremony
為初め[shisome] outset
為初める[shisomeru] to begin to do
仮初[karisome] temporary
業界初[gyoukaihatsu] the industry's first ...

月初め[tsukihajime] beginning of month
最初[saisho] beginning
初めに[hajimeni] to begin with (used as an introduction)
初めは[hajimeha] at first
手初めに[tehajimeni] at first